CN108521275A - A kind of logic gate based on magnetic Skyrmion - Google Patents
A kind of logic gate based on magnetic Skyrmion Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/185—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using dielectric elements with variable dielectric constant, e.g. ferro-electric capacitors
- H03K19/19—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using dielectric elements with variable dielectric constant, e.g. ferro-electric capacitors using ferro-resonant devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
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Abstract
A kind of logic gate based on magnetic Skyrmion, belongs to magnetic device technical field.Logic 1 and 0 is indicated using opposite polarity magnetic Skyrmion, improves the problem of information is lost and misread；The voltage source connectivity port of magnetic anisotropy region door is only controlled by changing voltage can realize the conversion of NAND gate and nor gate, greatly optimize manufacture craft；The present invention can be along antiferromagnetic Boundary motion using the magnetic Skyrmion of distortion, two magnetic Skyrmions of distortion can permeate the magnetic Skyrmion of distortion or a traditional magnetic Skyrmion, and under the driving of electric current, the characteristic that the magnetic Skyrmion that topological charge is+1 or 1 can mutually be converted with the magnetic Skyrmion of distortion, realizes the logical operation based on magnetic Skyrmion；Principle using magnetic Skyrmion in antiferromagnetic coupling boundary polarity upset realizes logic inverter；The logic gate of the present invention has the characteristics that small, low in energy consumption, stability is high, arithmetic speed is fast.
Description
Technical field
The invention belongs to magnetic device technical fields, and in particular to one kind based on magnetic Skyrmion realize NAND gate or
The logic gate of NOT gate and NOT gate.
Background technology
Logic gate is the foundation stone of hyundai electronics information technology, in digital circuit, indicates to patrol usually using low and high level
It collects " 1 " and " 0 ", different Boolean functions may be implemented using different logic gates, NAND gate, nor gate and NOT gate are all basic
Logic gate, NAND gate, nor gate and the corresponding truth table of nor gate are as follows：
| Input A | Input B | Export F |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
Table 1：The truth table of logic NAND gate
| Input A | Input B | Export F |
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 0 |
Table 2：The truth table of logic nor gate
| Input | Output |
| 0 | 1 |
| 1 | 0 |
Table 3：The truth table of logic inverter
Conventional CMOS structure make logic gate volume is big, power consumption is high, and Joule heat limits it and integrates to high-density.
Magnetic Skyrmion is a kind of magnetic structure by topology protection, with stability is high, size is small, control mode is various
The features such as.The different conditions of magnetic Skyrmion are used as " bit " to realize information storage and make logical device.Tradition is answered
Usually with magnetic Skyrmion with and without logical one and " 0 " is indicated in, basic logical operation (X.Zhang is realized
et.al,Magnetic skyrmion logic gates:conversion,duplication and merging of
skyrmions)。
The Skyrmion of distortion is a kind of Si Geming of novel stabilization in magnetic domain boundary for being present in two antiferromagnetic couplings
Sub- state (Huanhuan Yang et.al, Twisted skyrmion at domain boundaries and the
method of image).It can be mutually converted between the Skyrmion of distortion and traditional Skyrmion, and two distortions
Skyrmion may be implemented to merge.
The study found that electric current can be used for that magnetic Skyrmion is driven to move (Xichao Zhang in magnetic Nano band
et.al,Magnetic bilayer-skyrmions without skyrmion Hall effect).In addition, voltage controls
Magnetic anisotropy (VCMA) technology (Wang Kang et.al, Voltage Controlled Magnetic Skyrmion
Motion for Racetrack Memory) can be used for changing the anisotropy energy of magnetic Nano band, and then change it is magnetic this
The motion state of lattice pine torch.Magnetic tunnel junction (MTJ) (Jares, H et.al, Angular dependence of the
Tunnel magnetoresistance in transition-metal-based junctions) can be used for read magnetic this
The state of lattice pine torch.The above technological means has been tested or theory confirms, will be employed among the present invention.
Invention content
The novel logic NAND gate that the purpose of the present invention is to propose to a kind of based on magnetic Skyrmion, logic nor gate and
Logic inverter, the position of magnetic anisotropy door is controlled by simply changing voltage can realize the conversion of NAND gate and nor gate,
Principle using magnetic Skyrmion in antiferromagnetic coupling boundary polarity upset realizes logic inverter.
The technical scheme is that：
A kind of logic gate based on magnetic Skyrmion, including：
First input end and the second input terminal, the first input end include the first defeated of parallel setting and antiferromagnetic coupling
Enter track 11 and the second input track 12, second input terminal includes the third input track of parallel setting and antiferromagnetic coupling
13 and the 4th input track 14；
Output end, including the first output track 21 and the second output track 22；
First connecting path, including be arranged parallel and antiferromagnetic coupling first connection track 31 and second connect track
32；
Second connecting path, including be arranged parallel and the third of antiferromagnetic coupling connection track 33 and the 4th connect track
34；
Third connecting path, including be arranged parallel and antiferromagnetic coupling the 5th connection track 35 and the 6th connect track
36；
4th connecting path, including be arranged parallel and antiferromagnetic coupling the 7th connection track 37 and the 8th connect track
38；
5th connecting path, including the 9th connection track 39 and the tenth connect track 310；
First is detached from access, including is arranged parallel and the first of antiferromagnetic coupling de-orbits and 41 and second de-orbit
42；
Second is detached from access, including is arranged parallel and the third of antiferromagnetic coupling de-orbits and 43 and the 4th de-orbits
44；
One end and 11 antiferromagnetic coupling of the first input track of the first connection track 31, the other end and described the
One de-orbit 41 one end ferromagnetic coupling；
One end of the second connection track 32 and 11 ferromagnetic coupling of the first input track；
One end of the third connection track 33 and 13 ferromagnetic coupling of third input track, the other end and described second
De-orbit 42 one end ferromagnetic coupling；
One end of the 4th connection track 34 and 13 antiferromagnetic coupling of third input track；
One end of the 9th connection track 39 with described first de-orbit 41 other end antiferromagnetic coupling, and it is described
Second de-orbit 42 other end ferromagnetic coupling, the other end and 21 antiferromagnetic coupling of the first output track；
One end of the 5th connection track 35 and 12 ferromagnetic coupling of the second input track；
One end and 12 antiferromagnetic coupling of the second input track of the 6th connection track 36, the other end and described the
One end ferromagnetic coupling of Three Cut Off's track 43；
One end of the 7th connection track 37 and 14 antiferromagnetic coupling of the 4th input track；
One end of the 8th connection track 38 and 14 ferromagnetic coupling of the 4th input track, the other end and the described 4th
De-orbit 44 ferromagnetic couplings；
One end and the third of the tenth connection track 310 de-orbit 43 other end antiferromagnetic coupling, with institute
State the 4th de-orbit 44 other end ferromagnetic coupling, the other end and 22 antiferromagnetic coupling of the second output track；
It is both provided with magnetic tunnel junction in first output track, 21 and second output track 22, for reading the magnetic
The state of property Skyrmion；
The magnetic moment direction of the magnetic material of first input track 11 is perpendicular to 11 surface of the first input track
Outward.
Specifically, being additionally provided with voltage control magnetic anisotropy door in the 9th connection track 39, logic gate is at this time
NAND gate.
Specifically, being additionally provided with voltage control magnetic anisotropy door in the tenth connection track 310, logic gate is at this time
Nor gate.
Specifically, logic 1 is indicated using the magnetic Skyrmion that polarity is+1, from first input track 11 and third
Input track 13 enters；The magnetic Skyrmion for being -1 using polarity indicates logical zero, from second input track 12 and the 4th
Input track 14 enters.
Specifically, the magnetism Skyrmion can be changed into the magnetic Skyrmion of distortion under the driving of electric current, it is described
The magnetic Skyrmion of distortion be present in antiferromagnetic boundary and can along antiferromagnetic Boundary motion, the distortion magnetism Skyrmion with
The magnetic Skyrmion that topological charge is+1 or -1 can mutually convert.
Specifically, further including control circuit, the control circuit includes first voltage source V1, the second voltage source V2 and third
Voltage source V3, the voltage control magnetic anisotropy door include first voltage control magnetic anisotropy door C1 and second voltage control
Magnetic anisotropy door C2, the first voltage control magnetic anisotropy door C1 connections first voltage source V1 and second electricity
Potential source V2, the second voltage control magnetic anisotropy door C2 connections first voltage source V1 and tertiary voltage source V3.
Specifically, magnetic tunnel junction is both provided in the first input end and the second input terminal, for detecting whether having
Magnetic Skyrmion exists；Magnetic tunnel junction in the first input end is for controlling the tertiary voltage source V3, and described the
Magnetic tunnel junction in two input terminals is for controlling the second voltage source V2.
Specifically, driving the magnetic Skyrmion to move by electric current in face, the power device of electric current is in the face
Electrode, the first input end and the second input terminal connect negative electrode, and the output end connects positive electrode.
Specifically, 21 and second output track of the first output track, 22 antiferromagnetic coupling.
A kind of logic inverter based on magnetic Skyrmion, including input terminal and output end, the input terminal include anti-iron
Magnetic-coupled 5th input track 15 and the 6th input track 16, the output end include the third output track of antiferromagnetic coupling
23 and the 4th output track 24, the 5th input track 15 and 23 antiferromagnetic coupling of third output track, the described 6th
Input track 16 and 24 antiferromagnetic coupling of the 4th output track.
Beneficial effects of the present invention are：
(1) traditional logic gates based on magnetic Skyrmion be all using " having " and "None" magnetism Skyrmion come
Indicate logical one and " 0 " (or opposite mode), therefore the mutual movement between two magnetic Skyrmions will produce and misread
Or information is lost, and it is very harsh to keep all Skyrmions to move synchronously realization condition under existing experimental condition.
The present invention indicates that logical one and " 0 ", this representation method do not require all magnetism with the different polarity of magnetic Skyrmion
Skyrmion holding moves synchronously, and significantly improves to misread and loses problem with information.
(2) only by the connectivity port for changing voltage control magnetic anisotropy gate voltage source, so that it may to realize NAND gate
With the conversion of nor gate, manufacture craft is greatly optimized.
(3) property of the boundary reversing of antiferromagnetic coupling is passed through to devise logic inverter using magnetic Skyrmion,
Of simple structure and strong practicability.
(4) present invention utilizes a kind of novel magnetics structure：The magnetic Skyrmion of distortion, it can with it is traditional it is magnetic this
Lattice pine torch is converted mutually, and under the driving of impressed current, it is magnetic that the magnetic Skyrmion of two distortions can be fused into a distortion
Skyrmion, this provides a kind of new thinking for burying in oblivion magnetic Skyrmion.
(5) present invention constitutes logic gate using magnetic Skyrmion, with small, low in energy consumption, stability is high, operation is fast
Spend the features such as fast.
Description of the drawings
Fig. 1 is the structural schematic diagram of logic NAND gate in embodiment.
Fig. 2 is the structural schematic diagram of logic nor gate in embodiment.
Fig. 3 is the structural schematic diagram of logic inverter in embodiment.
Fig. 4 is the motion state schematic diagram of magnetic Skyrmion in logic NAND gate.
Fig. 5 is the motion state schematic diagram of magnetic Skyrmion in logic nor gate.
Fig. 6 is the motion state schematic diagram of magnetic Skyrmion in logic inverter.
Specific implementation mode
The detailed description present invention in the following with reference to the drawings and specific embodiments.
A kind of novel magnetics structure is utilized in the present invention：The magnetic Skyrmion of distortion distorts magnetic Skyrmion and deposits
It is antiferromagnetic boundary and the distortion that can also permeate along antiferromagnetic Boundary motion, the magnetic Skyrmion of two distortions
Magnetic Skyrmion or traditional magnetic Skyrmion；Under the driving of electric current, topological charge be+1 or -1 magnetic Skyrmion
The magnetic Skyrmion of distortion can be converted to, distort magnetic Skyrmion can also be converted into topological charge be+1 or -1 it is magnetic this
Lattice pine torch.
Logic NAND gate and/or NOT gate provided by the invention based on magnetic Skyrmion, including first input end, second
Input terminal and output end, wherein first input end include that the first input track 11 and second of parallel setting and antiferromagnetic coupling is defeated
Enter track 12, the second input terminal includes the third input track 13 and the 4th input track 14 of parallel setting and antiferromagnetic coupling；
Output end includes the first output track 21 and the second output track 22, and the first output track 21 and the second output track 22 can also
Antiferromagnetic coupling is convenient for the cascade of logic gate.
The magnetic moment direction of the magnetic material of first input track 11 and third input track 13 is its vertical surface and outward,
Since magnetic Skyrmion is generally present on film, so logic gate provided by the invention is to be based on film in some embodiments
It makes, then the magnetic moment direction of the magnetic material of the first input track 11 and third input track 13 is that vertical thin-film is outside,
The magnetic moment direction of so magnetic material of the second input track 12 and the 4th input track 14 be vertical thin-film inwards.
The magnetic Skyrmion for being+1 using polarity in the present invention indicates logic 1, defeated from the first input track 11 and third
Enter track 13 and enters logic gate；The magnetic Skyrmion for being -1 using polarity indicates logical zero, from the second input track 12 and the 4th
Input track 14 enters logic gate.
Logic gate provided by the invention further includes the first connecting path, the second connecting path, third connecting path, the 4th company
It includes parallel setting and anti-iron to connect road, the 5th connecting path, the first disengaging access and the second disengaging access, the first connecting path
Magnetic-coupled first connection track 31 and second connects track 32, and the second connecting path includes parallel setting and antiferromagnetic coupling
Third connects track 33 and the 4th and connects track 34, and the 5th connecting path includes that the 9th connection track 39 and the tenth connects track
310, the first disengaging access includes the first of parallel setting and antiferromagnetic coupling de-orbiting and 41 and second de-orbiting 42；First
Connect one end and 11 antiferromagnetic coupling of the first input track of track 31, the other end and first de-orbit 41 the ferromagnetic coupling in one end
It closes；One end of second connection track 32 and 11 ferromagnetic coupling of the first input track；One end of third connection track 33 and third are defeated
Enter 13 ferromagnetic coupling of track, the other end and second de-orbit 42 one end ferromagnetic coupling；4th connection track 34 one end with
13 antiferromagnetic coupling of third input track；9th connection track one end with first de-orbit 41 the other end it is antiferromagnetic
Coupling, de-orbit with described second 42 other end ferromagnetic coupling, the 9th connection track 39 the other end with first exports rail
21 antiferromagnetic coupling of road；Third connecting path includes parallel setting and the 5th connection connection of track 35 and the 6th of antiferromagnetic coupling
Track 36, the 4th connecting path include the 7th connection connection track 38 of track 37 and the 8th of parallel setting and antiferromagnetic coupling,
Second disengaging access includes that the third of parallel setting and antiferromagnetic coupling de-orbits and 43 and the 4th de-orbits 44, the 5th connection
One end of track 35 and 12 ferromagnetic coupling of the second input track；One end of 6th connection track 36 and 12 anti-iron of the second input track
Magnetic coupling, the other end and the third de-orbit 43 one end ferromagnetic coupling；One end of 7th connection track 37 and the 4th defeated
Enter 14 antiferromagnetic coupling of track；One end of 8th connection track 38 and 14 ferromagnetic coupling of the 4th input track, the other end and the 4th
De-orbit 44 ferromagnetic couplings；One end and the third of tenth connection track 310 de-orbit 43 other end antiferromagnetic coupling, with
4th de-orbit 44 other end ferromagnetic coupling, the tenth connection track 310 the other end and the second output track 22 it is antiferromagnetic
Coupling；Magnetic tunnel junction is both provided in first output track 21 and the second output track 22 for reading magnetic Skyrmion
State.
Magnetic Skyrmion enters logic gate from one of the two-orbit of input terminal track, when entering connecting path
Be changed into the magnetic Skyrmion of distortion, then successively along connecting path and the antiferromagnetic Boundary motion being detached from access, from
It is exported by the 5th connecting path and entrance after being converted to the magnetic Skyrmion that topological charge is+1 or -1 when absolving from access again
End, it is right since the second connection track 32 and the 4th connects track that the other end of track 34 is moved from magnetic Skyrmion farther out
As a result it does not influence, so not limiting herein.
Further include control circuit in some embodiments, control circuit includes first voltage source V1, the second voltage source V2 and
Three voltage source V3, voltage control magnetic anisotropy door include first voltage control magnetic anisotropy door C1 and second voltage control magnetic
Anisotropy door C2, first voltage control magnetic anisotropy door C1 connection first voltage source V1 and the second voltage source V2, the second electricity
Voltage-controlled magnetic anisotropy door C2 connection first voltage source V1 processed and tertiary voltage source V3.In first input end and the second input terminal
It is provided with magnetic tunnel junction, detects whether the Skyrmion presence that is magnetic, the magnetic tunnel junction in first input end is for controlling
Tertiary voltage source V3, the magnetic tunnel junction in the second input terminal is for controlling the second voltage source V2, the magnetic tunnel in NAND gate
Knot is arranged in the first input track 11 and third input track 13, and the magnetic tunnel junction setting in nor gate inputs rail second
In road 12 and the 4th input track 14.
Magnetic Skyrmion first passes through the control magnetic anisotropy door of the voltage in the 5th connecting path, then by output end,
Again by the magnetic tunnel junction reading state in output end.Voltage control magnetic anisotropy door (VCMA) includes first voltage control magnetic
Anisotropy door C1 and second voltage control magnetic anisotropy door C2.Voltage control magnetic anisotropy door can be provided separately within the
In one output track 21 or the second output track 22, it can also be respectively provided in the first output track 21 and the second output track 22
Identical voltage controls magnetic anisotropy door, and the connectivity port by changing the voltage source that voltage controls magnetic anisotropy door reaches
The conversion of NAND gate and nor gate, when first voltage source V1 connects with tertiary voltage source V3 the first electricity in the first output track 21
Voltage-controlled magnetic anisotropy door C1 processed, first voltage source V1 and the second voltage source V2 connect the second voltage in the first output track 22
When controlling magnetic anisotropy door C2, logic gate is NAND gate, as shown in Figure 1；When first voltage source V1 and tertiary voltage source V3 connects
The first voltage control magnetic anisotropy door C1 in the second output track 22 is met, first voltage source V1 is connected with the second voltage source V2
When second voltage in second output track 22 controls magnetic anisotropy door C2, logic gate is nor gate, as shown in Figure 2.
It is moved by the magnetic Skyrmion of electric current driving in face in some embodiments, the power device of electric current is electricity in face
Pole, first input end and the second input terminal connect negative electrode, and output end connects positive electrode, the direction of motion of magnetic Skyrmion and
In face electric current the direction of motion on the contrary, by magnetic Skyrmion from the first input track 11 enter logic gate for, electric current in face
Direction be to pass sequentially through the first output track 21, the 5th connecting path, first be detached from access, the first connecting path and first defeated
Enter track 11, and the movement locus of magnetic Skyrmion be pass sequentially through it is anti-in the first input track 11, the first connecting path
Antiferromagnetic boundary, the 5th connecting path and the first output track 21 in ferromagnetic boundary, the first disengaging access.
In some embodiments, logic gate is closed using magnetic material for Haas Le type (Heusler-type) magnetic shape memory
Gold is constructed of film, and Haas Le type (Heusler-type) magnetic shape memory alloy includes Ni-Mn-Ga, Ni-Mn-Z (In,
Sn, Sb), Ni-Mn-Sn-Co etc..Such as Ni-Mn-Sn-Co film preparations are utilized in the argon atmosphere of 0.011 millipascal
Magnetically controlled DC sputtering (power 150W) is deposited in (500 degrees Celsius) MgO (001) single crystalline substrate of heat.Film it is specific at
Dividing can be characterized by X-ray energy spectrometer.Logic NAND gate and/or the size of NOT gate can be：Total length is 1000nm, and width is
600nm, thickness 1nm；Output end width is 100nm；It is 100nm*20nm, four companies that voltage, which controls magnetic anisotropy door VCMA,
The track for connecting road can be linear type or arc track, it is preferred that the track of four connecting paths constitutes a square, logic
Door is symmetrical along the diagonal line of the square, angle α=β=135 ° of each connection track and input/output terminal.Logic inverter
Size is length 400nm, width 100nm.
Right and wrong door as shown in Figure 3 input be " 1 "+" 1 "=" 0 ", " 1 "+" 0 "=" 1 " and " 0 "+" 0 "=" 1 " this three
Three kinds of states of magnetism Skyrmion movement when in the case of kind, the flow direction of electric current (CIP) in white arrow expression face.Original state
When, first voltage source V1 control first voltage control magnetic anisotropy door C1 and second voltage control magnetic anisotropy door C2, make
The magnetic anisotropy of its region enhances, and the voltage value of the second voltage source V2 and tertiary voltage source V3 are 0 at this time.
" 1 "+" 1 "=" 0 "：When input is " 1 " and " 1 ", i.e., the magnetic Skyrmion that two polarity are+1 is respectively from first
Input track 11 and third input track 13 enter NAND gate, as shown in a1 in Fig. 4, the magnetic of first input end and the second input terminal
Property tunnel knot detect the magnetic Skyrmion that polarized is+1 in the presence of, the second voltage source V2 and tertiary voltage source V3 are generated
The reversed voltage with first voltage source V1 so that first voltage controls magnetic anisotropy door C1 and second voltage controls magnetic respectively to different
Property door C2 magnetic anisotropy restore normal.The magnetic Skyrmion that two polarity are+1 respectively enter the first connecting path and
It is changed into two distortions magnetic Skyrmion when the second connecting path, as shown in a2 in Fig. 4, with latter two distortion magnetism Si Geming
Antiferromagnetic Boundary motion of the son respectively along the first connecting path and the second connecting path.First connecting path and the second connection are logical
The magnetic Skyrmion of two distortions in road meets when entering the first disengaging access and is fused into a distortion magnetism Si Geming
Son, as shown in a3 in Fig. 3.It transports on the antiferromagnetic boundary that the magnetic Skyrmion of distortion then after fusion is detached from access along first
It is dynamic, as shown in a4 in Fig. 4.Distortion magnetism Skyrmion after fusion is leaving the first disengaging access into the 9th connection track 39
When be converted to again polarity be+1 Skyrmion, as shown in a5 in Fig. 4, due to the 9th connection track 39 in first voltage control
The magnetic anisotropy of magnetic anisotropy door C1 and second voltage control magnetic anisotropy door C2 are normal, the transformed Si Geming
Son controls magnetic anisotropy by two voltages and enters the first output end 21 behind the door, is changed into the Si Ge that polarity is -1 in boundary
It is detected by the magnetic tunnel junction in the first output end 21 after pine torch, as shown in a6 in Fig. 4, since present invention polarity is this of+1
Lattice pine torch indicates logical one, and the Skyrmion for being -1 with polarity indicates logical zero, the first output track 21 output of NAND gate
Logical zero.
" 1 "+" 0 "=" 1 ", " 0 "+" 1 "=" 1 "：When input is " 1 ", " 0 " or " 0 ", " 1 ", i.e., a polarity is+1
Magnetic Skyrmion enters NAND gate from the first input track 11, and the magnetic Skyrmion that a polarity is -1 inputs rail from the 4th
Road 14 enters NAND gate, as shown in b1 in Fig. 4；Or polarity be+1 magnetic Skyrmion from third input track 13 into
Enter NAND gate, the magnetic Skyrmion that a polarity is -1 enters NAND gate from the second input track 12, at this time first input end
Only detect that the magnetic Skyrmion for being+1 there are one polarity exists with the magnetic tunnel junction in the second input terminal, then first voltage
Control in magnetic anisotropy door C1 and second voltage control magnetic anisotropy door C2 only there are one magnetic anisotropy be normal value,
Then the 9th connection track 39 is equivalent to closed state, and the magnetic Skyrmion that polarity is+1 will not be defeated from the first output track 21
Go out, and the magnetic Skyrmion that polarity is -1 is changed into the magnetic Skyrmion of distortion when entering connecting path and is connected along third
Access or the movement of the 4th connecting path are simultaneously output to the tenth connection track 310 from the second disengaging access, as shown in b5 in Fig. 4,
The junction of tenth connection track 310 and the second output track 22 is changed into the Skyrmion that polarity is+1 and by the second output rail
Magnetic tunnel junction detection in road 22, as shown in b6 in Fig. 4, the second output terminal of NAND gate exports logical one at this time.
" 0 "+" 0 "=" 1 "：When input is " 0 ", " 0 ", i.e., the magnetic Skyrmion that two polarity are -1 is respectively from second
Input track 12 and the 4th input track 14 enter NAND gate, as shown in c1 in Fig. 4, magnetic Skyrmion that two polarity are -1
Be changed into the magnetic Skyrmion of distortion when entering connecting path, as shown in c2 in Fig. 4, the magnetic Skyrmion of latter two distortion
It meets respectively along third connecting path and the movement of the 4th connecting path and when entering the second disengaging access and is fused into one
The magnetic Skyrmion of distortion, as shown in c3 in Fig. 4, the magnetic Skyrmion of distortion after fusion continues on the second disengaging access
Antiferromagnetic boundary is moved to the tenth connection track 310, as shown in c4 in Fig. 4, is leaving the second disengaging access into the tenth connection
It when track 310, distorts magnetic Skyrmion and is converted to the Skyrmion that polarity is -1 again, as shown in c5 in Fig. 4, in the tenth connection
The interface of track 310 and the second output track 22 is changed into the Skyrmion that polarity is+1 and by the second output track 22
Magnetic tunnel junction detects, and as shown in c6 in Fig. 4, the second output track 22 of NAND gate exports logical one at this time.
Nor gate as shown in Figure 5 input be " 1 "+" 1 "=" 0 ", " 1 "+" 0 "=" 0 " and " 0 "+" 0 "=" 1 " this three
Three kinds of states of magnetism Skyrmion movement when in the case of kind, the flow direction of electric current (CIP) in white arrow expression face.Original state
When, first voltage source V1 control first voltage control magnetic anisotropy door C1 and second voltage control magnetic anisotropy door C2, make
The magnetic anisotropy of its region enhances, and the voltage value of the second voltage source V2 and tertiary voltage source V3 are 0 at this time.
" 1 "+" 1 "=" 0 "：When input is " 1 " and " 1 ", i.e., the magnetic Skyrmion that two polarity are+1 is respectively from first
Input track 11 and third input track 13 enter nor gate, as shown in a1 in Fig. 5.The magnetic Skyrmion that two polarity is+1
It is changed into the magnetic Skyrmion of two distortions when respectively enteing the first connecting path and the second connecting path, such as a2 institutes in Fig. 5
Show, is transported respectively along the antiferromagnetic boundary of the first connecting path and the second connecting path with the magnetic Skyrmion of latter two distortion
It is dynamic.The magnetic Skyrmion of two distortions in first connecting path and the second connecting path meets when entering the first disengaging access
And it is fused into the magnetic Skyrmion of a distortion, as shown in a3 in Fig. 5.Then the distortion magnetism Skyrmion after fusion is along the
One is detached from the antiferromagnetic Boundary motion of access, as shown in a4 in Fig. 5.Distortion magnetism Skyrmion after fusion is to leave first de-
The Skyrmion that polarity is+1 is converted to when entering the 9th connection track 39 from access again, as shown in a5 in Fig. 5, in the 9th connection
The interface of track 39 and the first output track 21 is changed into the Skyrmion that polarity is -1 and by the first output track 21
Magnetic tunnel junction detects, and as shown in a6 in Fig. 5, the first output track 11 of nor gate exports logical zero at this time.
" 1 "+" 0 "=" 0 ", " 0 "+" 1 "=" 0 "：When input is " 1 ", " 0 " or " 0 ", " 1 ", i.e., a polarity is+1
Magnetic Skyrmion enters nor gate from the first input track 11, and the magnetic Skyrmion that a polarity is -1 inputs rail from the 4th
Road 14 enters nor gate, as shown in b1 in Fig. 5；Or polarity be+1 magnetic Skyrmion from third input track 13 into
Enter nor gate, the magnetic Skyrmion that a polarity is -1 enters nor gate from the second input track 12, at this time first input end
Only detect that the magnetic Skyrmion for being -1 there are one polarity exists with the magnetic tunnel junction in the second input terminal, then the second connection
In first voltage control magnetic anisotropy door C1 and second voltage control magnetic anisotropy door C2 in track 22 only there are one
Magnetic anisotropy is normal value, then the second output track 22 is equivalent to closed state, and the magnetic Skyrmion that polarity is -1 will not
Exported from the second output track 22, and the magnetic Skyrmion that polarity is+1 be changed into when entering connecting path distortion it is magnetic this
Lattice pine torch moves along the first connecting path or the second connecting path and is output to the 9th connection track 39 from the first disengaging access,
As shown in b5 in Fig. 5, it is changed into the Si Geming that polarity is -1 in the interface of the 9th connection track 39 and the first output track 21
Son is simultaneously detected by the magnetic tunnel junction in the first output track 21, and as shown in b6 in Fig. 5, the first output end of nor gate is defeated at this time
Go out logical zero.
" 0 "+" 0 "=" 1 "：When input is " 0 ", " 0 ", i.e., the magnetic Skyrmion that two polarity are -1 is respectively from second
Input track 12 and the 4th input track 14 enter nor gate, as shown in c1 in Fig. 5, first input end and the second input terminal at this time
Magnetic tunnel junction detect that polarity is -1 magnetic Skyrmion, the second voltage source V2 and tertiary voltage source V3 are generated and the
Voltage reversed one voltage source V1 so that first voltage controls magnetic anisotropy door C1 and second voltage controls magnetic anisotropy door
The magnetic anisotropy of C2 restores normal；The magnetic Skyrmion that two polarity are -1 is changed into distortion magnetic when entering connecting path
Property Skyrmion, as shown in c2 in Fig. 5, latter two magnetic Skyrmion of distortion connect respectively along third connecting path and the 4th
It connects path movements and meets when entering the second disengaging access and be fused into the magnetic Skyrmion of a distortion, such as c3 institutes in Fig. 5
Show, the antiferromagnetic boundary that the magnetic Skyrmion of the distortion after fusion continues on the second disengaging access connects track 310 to the tenth
Movement, when leaving the second disengaging access into the tenth connection track 310, distorts magnetic Skyrmion again as shown in c4 in Fig. 5
The Skyrmion that polarity is -1 is converted to, as shown in c5 in Fig. 5, the Skyrmion in the tenth connection track 310 passes through two electricity
Voltage-controlled magnetic anisotropy processed enters the second output track 22 behind the door, by the after boundary is changed into the Skyrmion that polarity is+1
Magnetic tunnel junction detection in two output tracks 22, as shown in c6 in Fig. 5, the second output track 22 output of nor gate at this time is patrolled
It collects " 1 ".
The magnetic moment direction of logic inverter in the present embodiment, the magnetic material of the 5th input track 15 is its vertical surface
And outward, since magnetic Skyrmion is generally present on film, so logic inverter provided by the invention in some embodiments
It is made based on film, then the magnetic moment direction of the magnetic material of the 5th input track 15 and the 4th output track 24 is vertical thin
Film is outside, then the magnetic moment direction of the magnetic material of the 6th input track 16 and third output track 23 be vertical thin-film inwards
's.
Be illustrated in figure 6 in the present embodiment logic inverter input be " 1 " export be " 0 " when magnetism Skyrmion move
State, the flow direction of electric current (CIP) in white arrow expression face.
Fig. 6 (a) be non-goalkeeper input logical one be converted to output " 0 " overall schematic, input for " 1 " when, such as
Shown in Fig. 6 (b), the magnetic Skyrmion that polarity is+1 enters NOT gate from the 5th input track 15, in face under the driving of electric current
Moved along the 5th input track 15 and enter third output track 23, intersection realize polarity upset, be changed into polarity be-
1 Skyrmion, as shown in Fig. 6 (c), the Skyrmion after changing continues on the movement of third output track, such as Fig. 6 (d)
Shown, NOT gate exports logical zero at this time.NOT gate is same as above in the process for the logical one that the logical zero of input is changed into output.
Those skilled in the art can make various do not depart from originally according to the technical disclosures disclosed by the invention
Various other specific variations and combinations of essence are invented, these variations and combinations are still within the scope of the present invention.
Claims (10)
1. a kind of logic gate based on magnetic Skyrmion, which is characterized in that including：
First input end and the second input terminal, the first input end include the first input rail of parallel setting and antiferromagnetic coupling
Road (11) and the second input track (12), second input terminal include the third input track of parallel setting and antiferromagnetic coupling
(13) and the 4th input track (14)；
Output end, including the first output track (21) and the second output track (22)；
First connecting path, including be arranged parallel and antiferromagnetic coupling first connection track (31) and second connect track
(32)；
Second connecting path, including be arranged parallel and the third of antiferromagnetic coupling connection track (33) and the 4th connect track
(34)；
Third connecting path, including be arranged parallel and antiferromagnetic coupling the 5th connection track (35) and the 6th connect track
(36)；
4th connecting path, including be arranged parallel and antiferromagnetic coupling the 7th connection track (37) and the 8th connect track
(38)；
5th connecting path, including the 9th connection track (39) and the tenth connection track (310)；
First is detached from access, including is arranged parallel and the first of antiferromagnetic coupling de-orbits (41) and second de-orbits
(42)；
Second be detached from access, including be arranged parallel and the third of antiferromagnetic coupling de-orbit (43) and the 4th de-orbit
(44)；
One end and the first input track (11) antiferromagnetic coupling of the first connection track (31), the other end and described the
The one one end ferromagnetic coupling for de-orbiting (41)；
One end of the second connection track (32) and the first input track (11) ferromagnetic coupling；
One end of the third connection track (33) and third input track (13) ferromagnetic coupling, the other end and described second
De-orbit one end ferromagnetic coupling of (42)；
One end of the 4th connection track (34) and third input track (13) antiferromagnetic coupling；
The other end antiferromagnetic coupling that one end of the 9th connection track (39) de-orbits (41) with described first, and it is described
Second other end ferromagnetic coupling for de-orbiting (42), the other end and the first output track (21) antiferromagnetic coupling；
One end of the 5th connection track (35) and the second input track (12) ferromagnetic coupling；
One end and the second input track (12) antiferromagnetic coupling of the 6th connection track (36), the other end and described the
One end ferromagnetic coupling of Three Cut Off's track (43)；
One end of the 7th connection track (37) and the 4th input track (14) antiferromagnetic coupling；
One end of the 8th connection track (38) and the 4th input track (14) ferromagnetic coupling, the other end and the described 4th
De-orbit (44) ferromagnetic coupling；
One end and the third of the tenth connection track (310) de-orbit the other end antiferromagnetic coupling of (43), with institute
State the 4th other end ferromagnetic coupling for de-orbiting (44), the other end and the second output track (22) antiferromagnetic coupling；
It is both provided with magnetic tunnel junction in first output track (21) and the second output track (22), for reading the magnetic
The state of property Skyrmion；
The magnetic moment direction of the magnetic material of first input track (11) is perpendicular to the first input track (11) surface
Outward.
2. the logic gate according to claim 1 based on magnetic Skyrmion, which is characterized in that the 9th connection track
(39) voltage control magnetic anisotropy door is additionally provided in, logic gate is NAND gate at this time.
3. the logic gate according to claim 1 based on magnetic Skyrmion, which is characterized in that the tenth connection track
(310) voltage control magnetic anisotropy door is additionally provided in, logic gate is nor gate at this time.
4. the logic gate according to claim 2 or 3 based on magnetic Skyrmion, which is characterized in that it is+1 to utilize polarity
Magnetic Skyrmion indicate logic 1, from first input track (11) and third input track (13) entrance；Utilize polarity
Logical zero is indicated for -1 magnetic Skyrmion, is entered from second input track (12) and the 4th input track (14).
5. the logic gate according to claim 4 based on magnetic Skyrmion, which is characterized in that the magnetism Skyrmion
The magnetic Skyrmion of distortion can be changed under the driving of electric current, the magnetic Skyrmion of the distortion is present in antiferromagnetic boundary
And can be along antiferromagnetic Boundary motion, the magnetic Skyrmion that the distortion magnetism Skyrmion and topological charge are+1 or -1 can
It mutually converts.
6. the logic gate according to claim 5 based on magnetic Skyrmion, which is characterized in that further include control circuit,
The control circuit includes that first voltage source (V1), the second voltage source (V2) and tertiary voltage source (V3), the voltage control magnetic
Anisotropy door includes first voltage control magnetic anisotropy door (C1) and second voltage controls magnetic anisotropy door (C2), described
First voltage controls magnetic anisotropy door (C1) and connects the first voltage source (V1) and the second voltage source (V2), and described the
Two voltages control magnetic anisotropy door (C2) and connect the first voltage source (V1) and the tertiary voltage source (V3).
7. the logic gate according to claim 6 based on magnetic Skyrmion, which is characterized in that the first input end and
It is both provided with magnetic tunnel junction in second input terminal, for detecting whether the Skyrmion presence that is magnetic；The first input end
Interior magnetic tunnel junction is for controlling the tertiary voltage source (V3), and the magnetic tunnel junction in second input terminal is for controlling
The second voltage source (V2).
8. the logic gate according to claim 5 based on magnetic Skyrmion, which is characterized in that driven by electric current in face
The magnetism Skyrmion moves, and the power device of electric current is electrode, the first input end and the second input terminal in the face
Negative electrode is connected, the output end connects positive electrode.
9. the logic gate according to claim 4 based on magnetic Skyrmion, which is characterized in that first output track
(21) and the second output track (22) antiferromagnetic coupling.
10. a kind of logic inverter based on magnetic Skyrmion, which is characterized in that including input terminal and output end, the input
End includes the 5th input track (15) of antiferromagnetic coupling and the 6th input track (16), the output end include antiferromagnetic coupling
Third output track (23) and the 4th output track (24), the 5th input track (15) and the third output track
(23) antiferromagnetic coupling, the 6th input track (16) and the 4th output track (24) antiferromagnetic coupling.
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