CN110233609A - The JK flip-flop with annular magnet racing track structure based on magnetic Skyrmion - Google Patents
The JK flip-flop with annular magnet racing track structure based on magnetic Skyrmion Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
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Abstract
The invention discloses a kind of JK flip-flop with annular magnet racing track structure based on magnetic Skyrmion, magnetic Skyrmion is placed in annular magnet racing track by the present invention, make Skyrmion shuttling movement in magnetic racing track by the way of voltage driving, and state of the Skyrmion in magnetic racing track is read by magnetic tunnel-junction, and then realize the logic function of JK flip-flop, ensure the stability when JK flip-flop based on Skyrmion uses.
Description
Technical field
The present invention relates to JK flip-flop fields, have annular based on magnetic Skyrmion more specifically to a kind of
The JK flip-flop of magnetic racing track structure.
Background technique
JK flip-flop belongs to a kind of device relatively conventional in logical device, is a group indispensable in digital circuit
Part, the CMOS technology preparation that traditional logical device generallys use, with the promotion of device integration, this semiconductor technology
Defect is gradually exposed: one side transistor constantly increases with its leakage current of the reduction of size, and the power consumption of device gradually increases
Greatly；Another aspect transistor circuit gradually tends to performance boundary, and continuing raising integrated level will become very difficult.
Magnetic Skyrmion is a kind of magnetic structure with topological protection feature in magnetic material, due to its nano-scale
(diameter minimum only has several nanometers), the characteristics such as topology protection (stability is good), therefore magnetic Skyrmion are as high integration
The information storage medium of device has advantageous advantage, can be applied in memory and logical device.It is proposed at present
Magnetic Skyrmion logical device be straight racing track structure, in the Skyrmion that input terminal generates move to output by driving
It holds to realize that logic function, this structure will lead to such devices and be detained Skyrmion in the devices, in turn
Influence the secondary use of device.Therefore, a kind of reusable Skyrmion logic device designs scheme be very it is necessary to
's.
Correlative study shows that the movement of magnetic Skyrmion can control the magnetic anisotropy energy of magnetic material by voltage
Change of gradient realizes (Wang X et.al, Efficient skyrmion transport mediated by voltage
Controlled magnetic anisotropy gradient), and magnetic tunnel-junction (MTJ) can be used for reading Si Geming
State (Jaffres, H, et.al, Angular dependence of the tunnel magnetoresistance of son
in transition-metal-based junctions).The above technological means has passed through experiment and theory is confirmed,
It is adopted by the present invention.
Summary of the invention
The technical problem to be solved in the present invention is that for magnetic Skyrmion JK flip-flop proposed in the prior art
It is straight racing track structure, which is to move to output end in the Skyrmion that input terminal generates to realize logic function by driving
Can, this structure will lead to such devices and be detained Skyrmion in the devices, and then influence the secondary of device
The technological deficiency used provides a kind of JK flip-flop with annular magnet racing track structure based on magnetic Skyrmion.
The present invention solves its technical problem, it is used based on magnetic Skyrmion with annular magnet racing track structure
JK flip-flop, using annular magnet racing track structure, annular magnet racing track structure be sequentially connected by the 1st racing track to the 4th racing track and
At annular, the 1st racing track and the 3rd racing track are straight racing track, and the 2nd racing track and the 4th racing track are bending racing track, and every section of racing track is one end
The thin wedge structure in thick one end, the junction of any two wedge structure are that the thick end of a wedge structure and another wedge shape are tied
The thin end of structure connects；
Every section of racing track includes the electrode layer set gradually, dielectric layer and the first ferromagnetic layer, i.e. totally 4 segment electrode layers, 4 sections of Jie
Electric layer and 4 section of first ferromagnetic layer；The entirety that 4 section of first ferromagnetic layer is integrally formed, 4 segment electrode layers and 4 sections of dielectric layers are 4
The independent structure of section, and the thickness of two dielectric layers of arbitrary neighborhood is inconsistent, so that between two electrode layers of arbitrary neighborhood
Be it is non-contacting, to guarantee to insulate；Magnetic Skyrmion initial solidification is in the 1st racing track or the 3rd racing track；
One of them straight racing track is provided with magnetic tunnel-junction on the first ferromagnetic layer, draws JK flip-flop on magnetic tunnel-junction
The end OUTPUT, draws the ground terminal of JK flip-flop on the first ferromagnetic layer, and electrode layer one of the 2nd racing track and the 4th racing track is used to draw
The end INPUT J of JK flip-flop out, another is used to draw the end INPUT K, and the electrode layer of the 1st racing track and the 3rd racing track is used to draw
The end CLK out.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, the magnetic tunnel-junction includes setting gradually: the first ferromagnetic layer, insulating layer and the second ferromagnetic layer where magnetic tunnel-junction, institute
On the opposite face for stating the contact surface for the first ferromagnetic layer that insulating layer is located at where magnetic tunnel-junction, the contact surface refers to magnetic tunnel-junction
The face that first ferromagnetic layer at place is in contact with dielectric layer, the end OUTPUT are drawn from second ferromagnetic layer.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, the direction of magnetization of the second ferromagnetic layer is identical as the direction of magnetization of the first ferromagnetic layer.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, the length of the 1st racing track and the 3rd racing track is identical, and the 2nd racing track and the 4th racing track are the consistent semicircular ring of radius.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, the consistency of thickness of 4 segment electrode layers, the thickness of the first ferromagnetic layer is uniform.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, the thickness of two dielectric layers of arbitrary neighborhood is inconsistent to be accomplished in the following manner: by adopting different sections of dielectric layer
It is made of different materials.
Further, the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion
In, logic gate realizes that the process of JK flip-flop logical operation is as follows:
When input terminal INPUT J input is " 0 ", and INPUT K input is " 0 ", JK flip-flop, which is realized, keeps function: if this
The initial position of lattice pine torch is the 3rd racing track, and the magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore just
Beginning output state is high level " 1 ", since the 2nd racing track and the 4th racing track are without magnetic anisotropy energy gradient, final Skyrmion
The 3rd racing track can be rested on, will detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, then exporting will keep originally
" 1 " high level state；Similarly, if the initial position of Skyrmion is the 1st racing track, be now placed in the magnetic tunnel-junction of the 3rd racing track without
Method detects Skyrmion, therefore initial output state is low level " 0 ", due to the 2nd racing track and the 4th racing track without magnetic respectively to
Different capability gradient, final Skyrmion can rest on the 1st racing track, and the magnetic tunnel-junction positioned at the 3rd racing track can not detect Si Geming
Son, original " 0 " low level state will be kept by then exporting；
When input terminal INPUT J input is " 1 ", and INPUT K input is " 0 ", JK flip-flop realization set function: the 4th
Racing track does not have magnetic anisotropy energy gradient, and the 2nd racing track has magnetic anisotropy energy gradient, if the initial position of Skyrmion is the 3rd
Racing track, the magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore initial output state is high level " 1 ",
Since the 4th racing track does not have magnetic anisotropy energy gradient, the 2nd racing track has magnetic anisotropy energy gradient, and final Skyrmion can stop
In the 3rd racing track, Skyrmion will detect that positioned at the magnetic tunnel-junction of the 3rd racing track, original " 1 " high electricity will be kept by then exporting
Level state；Similarly, if the initial position of Skyrmion is the 1st racing track, the magnetic tunnel-junction for being now placed in the 3rd racing track can not be detected
Skyrmion, therefore initial output state is low level " 0 ", since the 4th racing track does not have magnetic anisotropy energy gradient, the 2nd racing track
There is magnetic anisotropy energy gradient, Skyrmion can move to the 3rd racing track from the 1st racing track, and final Skyrmion will stay on the 3rd match
In road, Skyrmion will detect that positioned at the magnetic tunnel-junction of the 3rd racing track, then output can be changed into " 1 " high level state；
When input terminal INPUT J input is " 0 ", and INPUT K input is " 1 ", JK flip-flop realization reset function, the 4th
Racing track has magnetic anisotropy energy gradient, and the 2nd racing track does not have magnetic anisotropy energy gradient, if the initial position of Skyrmion is the 3rd
Racing track, the magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore initial output state is high level " 1 ",
Since the 4th racing track has magnetic anisotropy energy gradient, the 2nd racing track does not have magnetic anisotropy energy gradient, and Skyrmion can be from the 3rd racing track
The 1st racing track is moved to, final Skyrmion can rest in the 1st racing track, and the magnetic tunnel-junction positioned at the 3rd racing track can not detect this
Lattice pine torch, then output translates into " 0 " low level state；Similarly, if the initial position of Skyrmion is the 1st racing track, at this time
Skyrmion can not be detected positioned at the magnetic tunnel-junction of the 3rd racing track, therefore initial output state is low level " 0 ", due to the 4th match
There is magnetic anisotropy energy gradient in road, and the 2nd racing track does not have magnetic anisotropy energy gradient, and final Skyrmion will stay on the 1st racing track
In, Skyrmion can not be detected positioned at the magnetic tunnel-junction of the 3rd racing track, and then output can keep " 0 " high level state；
When input terminal INPUT J input is " 1 ", and INPUT K input is " 1 ", JK flip-flop realization turn over function: the 2nd
There is magnetic anisotropy energy gradient in racing track and the 4th racing track, if the initial position of Skyrmion is the 3rd racing track, be now placed in the 3rd
The magnetic tunnel-junction of racing track will detect that Skyrmion, therefore initial output state is high level " 1 ", due to the 2nd racing track and the 4th
There is magnetic anisotropy energy gradient in racing track, Skyrmion can move to the 1st racing track from the 3rd racing track within a clock cycle,
Skyrmion can rest in the 1st racing track at this time, can not detect Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, then defeated
" 0 " low level state is translated into out；Similarly, if the original state of Skyrmion is the 1st racing track, it is now placed in the 3rd racing track
Magnetic tunnel-junction can not detect Skyrmion, therefore initial output state is low level " 0 ", since the 2nd racing track and the 4th racing track are equal
There are magnetic anisotropy energy gradient, Skyrmion can move to the 3rd racing track from the 1st racing track within a clock cycle, at this time this
Lattice pine torch can rest in the 3rd racing track, be able to detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, and then output will turn
Become " 1 " high level state.
Implement the JK flip-flop with annular magnet racing track structure of the invention based on magnetic Skyrmion, has following
The utility model has the advantages that magnetic Skyrmion is placed in annular magnet racing track structure by the present invention, overvoltage drives Skyrmion to match in magnetism
Shuttling movement in road, and state of the Skyrmion in magnetic racing track is read by magnetic tunnel-junction, and then realize JK flip-flop
Logic function, maintain performance when the secondary use of JK flip-flop.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is annular magnet racing track structural schematic diagram；
Fig. 2 is straight racing track structural schematic diagram；
Fig. 3 is bending racing track structural schematic diagram；
Fig. 4 is logic gate wiring schematic diagram.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
The scheme that the present invention solves the above problems is as follows:
Fig. 1 is annular magnet racing track structural schematic diagram used by this patent: entire annular racing track can be divided into four sections in total,
Wherein 1,3 be straight racing track, and 2,4 be bending racing track, and every section of racing track is made of electrode layer 6, dielectric layer 7 and ferromagnetic layer 8, straight
It is provided with MTJ (magnetic tunnel-junction 5) below racing track 3, i.e., ferromagnetic layer 8, insulating layer 9 and ferromagnetic layer 10 collectively constitute MTJ for detecting
The state of Skyrmion in ferromagnetic layer 8.As a kind of preferred embodiment of the invention, racing track 1 is identical with the length of racing track 3,
Racing track 2 and racing track 4 are the consistent semicircular ring of radius.
Fig. 2 is straight racing track structural schematic diagram used by this patent, 1 and 3 in straight racing track, that is, figure one, total is in wedge
Shape structure is divided into three layers, respectively electrode layer 6, dielectric layer 7 and ferromagnetic layer 8.
Fig. 3 is that racing track structural schematic diagram is bent used by this patent, 2 and 4 be bent in racing track, that is, figure one, total
Sweeping wedge structure is divided into three layers, respectively electrode layer 6, dielectric layer 7 and ferromagnetic layer 8.As of the invention one
Kind preferred embodiment, the consistency of thickness of 4 segment electrode layers 6, the thickness of ferromagnetic layer 8 are uniform.
The junction of any two wedge structure is the thick end of a wedge structure and the Bao Duanlian of another wedge structure
It connects.The entirety that 4 section of first ferromagnetic layer is integrally formed, 4 segment electrode layers 6 and 4 sections of dielectric layers 7 are 4 sections of independent structures, and are appointed
Anticipate two adjacent dielectric layers 7 thickness it is inconsistent so that be between two electrode layers 6 of arbitrary neighborhood it is non-contacting, with protect
Card insulation.As a kind of preferred embodiment of the invention, the inconsistent thickness of two dielectric layers 7 of arbitrary neighborhood is to pass through following manner
It realizes: by the way that different sections of dielectric layer 7 to be made of different materials.
Either straight racing track is still bent racing track, and ferromagnetic layer 8 accesses ground wire, and the electrode layer 6 of each section of racing track is equal
Voltage signal is accessed by mutually independent conducting wire to drive Skyrmion to move in ferromagnetic layer 8, due to the shadow of wedge structure
It rings, when, there are when potential difference, the magnetic anisotropy of ferromagnetic layer 8 can change in gradient (for straight between electrode layer 6 and ferromagnetic layer 8
Runway 1,3 is changed with length, for curved runway 2,4 is changed with arc angle), and then drive Skyrmion in ferromagnetic layer 8
Middle movement.Here when incoming level is high level " 1 ", Skyrmion can move regulation in racing track, when incoming level is low
When level " 0 ", Skyrmion can be static in racing track, and the specific voltage swing that high level " 1 " is referred to depends on magnetic material
Parameter and entire racing track structure, and the specific voltage swing that low level " 0 " is referred to is commonly referred to be 0 volt or extremely low of electricity
Pressure.
Fig. 4 is logic gate wiring schematic diagram, and four sections of racing tracks are introduced electricity when logical gate operations by mutually independent conducting wire
Ordinary mail number, racing track 2 and racing track 4 are respectively connected to INPUT J and two input terminals of the INPUT K as logical gate operations, racing track 1 with
The 3 same clock signal clks of access.Magnetic tunnel-junction 5 exports the level signal after operation as output end, specifically, magnetic tunnel
Road knot 5 includes setting gradually: ferromagnetic layer 8, insulating layer and the second ferromagnetic layer 10 where magnetic tunnel-junction 5, insulating layer 9 are located at magnetic
On the opposite face of the contact surface of ferromagnetic layer 8 where tunnel knot 5, contact surface refers to the ferromagnetic layer 8 and dielectric at 5 place of magnetic tunnel-junction
The face that layer 7 is in contact, the end OUTPUT is drawn from the second ferromagnetic layer 10.
Logic gate realizes that the process of JK flip-flop logical operation is as follows.
The direction of magnetization of the reference layer 10 (i.e. ferromagnetic layer 10) of magnetic tunnel-junction 5 is fixed as to the layer of vertical ferromagnetic layer 8 first
Dielectric layer 7 (identical as the direction of magnetization of ferromagnetic layer 8) is facing, the level of as vertical ferromagnetic layer 8 is upward in Fig. 1, in this way,
High level " 1 " just represents Skyrmion in racing track 3, and low level " 0 " then represents Skyrmion not in racing track 3.This single lattice
Pine torch by premature cure in racing track 3 or racing track 1, due to racing track 3 (racing track 1) subject clock signal (CLK) control, when clock believe
Number be " 1 " (high level) when, it is close to drive Skyrmion to move to that racing track 3 (racing track 1) can generate magnetic anisotropy energy gradient
The position of racing track 4 (racing track 2), below will be according to the four of input terminal kinds of states (J: " 0 " K: " 0 "；J:"1"K:"0"；J:"0"K:
"1"；J: " 1 " K: " 1 ") it discusses.
As input terminal J: " 0 " K: when " 0 " (keeping function), if the initial position of Skyrmion is racing track 3, being now placed in match
The magnetic tunnel-junction 5 in road 3 will detect that Skyrmion, therefore initial output state is high level " 1 ".Due to racing track 2 and racing track 4
Without magnetic anisotropy energy gradient, final Skyrmion can rest on racing track 3, and the magnetic tunnel-junction 5 positioned at racing track 3 will detect
To Skyrmion, original " 1 " high level state will be kept by then exporting.Similarly, if the initial position of Skyrmion is racing track
1, the magnetic tunnel-junction 5 for being now placed in racing track 3 can not detect Skyrmion, therefore initial output state is low level " 0 ".Due to
Racing track 2 and racing track 4 are without magnetic anisotropy energy gradient, and final Skyrmion can rest on racing track 1, positioned at the magnetic tunnel of racing track 3
Road knot 5 can not detect Skyrmion, and original " 0 " low level state will be kept by then exporting.To sum up, J: " 0 " K: " 0 " input
The holding output function of respective devices；
As input terminal J: " 1 " K: when " 0 " (set function), racing track 4 does not have magnetic anisotropy energy gradient, and racing track 2 has magnetic each
Anisotropy energy gradient, if the initial position of Skyrmion is racing track 3, the magnetic tunnel-junction 5 for being now placed in racing track 3 will detect that this
Lattice pine torch, therefore initial output state is high level " 1 ".Since racing track 4 does not have magnetic anisotropy energy gradient, racing track 2 has magnetic each
Anisotropy energy gradient, final Skyrmion can rest on racing track 3, and the magnetic tunnel-junction 5 positioned at racing track 3 will detect that Si Geming
Son, original " 1 " high level state will be kept by then exporting.Similarly, if the initial position of Skyrmion is racing track 1, at this time position
Skyrmion can not be detected in the magnetic tunnel-junction 5 of racing track 3, therefore initial output state is low level " 0 ".Since racing track 4 does not have
There is magnetic anisotropy energy gradient, racing track 2 has magnetic anisotropy energy gradient, and Skyrmion can move to racing track 3 from racing track 1, finally
Skyrmion will stay in racing track 3, and the magnetic tunnel-junction 5 positioned at racing track 3 will detect that Skyrmion, and then output can change
For " 1 " high level state.To sum up, J: " 1 " K: the set function of " 0 " input respective devices；
As input terminal J: " 0 " K: when " 1 " (reset function), racing track 4 has magnetic anisotropy energy gradient, and racing track 2 is each without magnetic
Anisotropy energy gradient, if the initial position of Skyrmion is racing track 3, the magnetic tunnel-junction 5 for being now placed in racing track 3 will detect that this
Lattice pine torch, therefore initial output state is high level " 1 ".Since racing track 4 has magnetic anisotropy energy gradient, racing track 2 is each without magnetic
Anisotropy energy gradient, Skyrmion can move to racing track 1 from racing track 3, and final Skyrmion can rest in racing track 1, be located at match
The magnetic tunnel-junction 5 in road 3 can not detect Skyrmion, and then output translates into " 0 " low level state.Similarly, Ruo Sigeming
The initial position of son is racing track 1, and the magnetic tunnel-junction 5 for being now placed in racing track 3 can not detect Skyrmion, therefore initially export shape
State is low level " 0 ".Since racing track 4 has magnetic anisotropy energy gradient, racing track 2 does not have magnetic anisotropy energy gradient, this final lattice
Pine torch will stay in racing track 1, and the magnetic tunnel-junction 5 positioned at racing track 3 can not detect Skyrmion, and then output can keep " 0 "
High level state.To sum up, J: " 0 " K: the reset function of " 1 " input respective devices；
As input terminal J: " 1 " K: when " 1 " (turn over function), there is magnetic anisotropy energy gradient in racing track 2 and racing track 4, if
The initial position of Skyrmion is racing track 3, and the magnetic tunnel-junction 5 for being now placed in racing track 3 will detect that Skyrmion, therefore initial
Output state is high level " 1 ".Since racing track 2 and racing track 4 have magnetic anisotropy energy gradient, Skyrmion can be at one
Racing track 1 is moved to from racing track 3 in the clock period, Skyrmion can rest in racing track 1 at this time, positioned at 5 nothing of magnetic tunnel-junction of racing track 3
Method detects Skyrmion, and then output translates into " 0 " low level state.Similarly, if the original state of Skyrmion is match
Road 1, the magnetic tunnel-junction 5 for being now placed in racing track 3 can not detect Skyrmion, therefore initial output state is low level " 0 ".By
There is magnetic anisotropy energy gradient in racing track 2 and racing track 4, Skyrmion can be moved to from racing track 1 within a clock cycle
Racing track 3, Skyrmion can rest in racing track 3 at this time, and the magnetic tunnel-junction 5 positioned at racing track 3 is able to detect that Skyrmion, then
Output translates into " 1 " high level state.To sum up, J: " 1 " K: " 1 " inputs the turn over function of respective devices, every a clock
Signal overturns an output level.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (7)
1. a kind of JK flip-flop with annular magnet racing track structure based on magnetic Skyrmion, which is characterized in that use ring
Shape magnetism racing track structure, annular magnet racing track structure are the annular being connected in sequence by the 1st racing track to the 4th racing track, the 1st racing track
It is straight racing track with the 3rd racing track, the 2nd racing track and the 4th racing track are bending racing track, and every section of racing track is the thin wedge shape knot in one end thickness one end
Structure, the junction of any two wedge structure are that the thick end of a wedge structure is connect with the thin end of another wedge structure；
Every section of racing track includes the electrode layer set gradually, dielectric layer and the first ferromagnetic layer, i.e. totally 4 segment electrode layers, 4 sections of dielectric layers
And 4 section of first ferromagnetic layer；The entirety that 4 section of first ferromagnetic layer is integrally formed, 4 segment electrode layers and 4 sections of dielectric layers are 4 sections only
Vertical structure, and the thickness of two dielectric layers of arbitrary neighborhood is inconsistent, so that right and wrong between two electrode layers of arbitrary neighborhood
Contact, to guarantee to insulate；Magnetic Skyrmion initial solidification is in the 1st racing track or the 3rd racing track；
One of them straight racing track is provided with magnetic tunnel-junction on the first ferromagnetic layer, and the OUTPUT of JK flip-flop is drawn on magnetic tunnel-junction
End, draws the ground terminal of JK flip-flop on the first ferromagnetic layer, and electrode layer one of the 2nd racing track and the 4th racing track is used to draw JK touching
The end INPUT J of device is sent out, another is used to draw the end INPUT K, and the electrode layer of the 1st racing track and the 3rd racing track is used to draw CLK
End.
2. the JK flip-flop with annular magnet racing track structure according to claim 1 based on magnetic Skyrmion,
Be characterized in that, the magnetic tunnel-junction includes setting gradually: the first ferromagnetic layer, insulating layer and second where magnetic tunnel-junction are ferromagnetic
Layer, the insulating layer are located on the opposite face of the contact surface of the first ferromagnetic layer where magnetic tunnel-junction, and the contact surface refers to magnetic
The face that the first ferromagnetic layer where tunnel knot is in contact with dielectric layer, the end OUTPUT are drawn from second ferromagnetic layer.
3. the JK flip-flop with annular magnet racing track structure according to claim 2 based on magnetic Skyrmion,
It is characterized in that, the direction of magnetization of the second ferromagnetic layer is identical as the direction of magnetization of the first ferromagnetic layer.
4. the JK flip-flop with annular magnet racing track structure according to claim 1 based on magnetic Skyrmion,
It is characterized in that, the length of the 1st racing track and the 3rd racing track is identical, and the 2nd racing track and the 4th racing track are the consistent semicircular ring of radius.
5. the JK flip-flop with annular magnet racing track structure according to claim 1 based on magnetic Skyrmion,
It is characterized in that, the consistency of thickness of 4 segment electrode layers, the thickness of the first ferromagnetic layer is uniform.
6. the JK flip-flop with annular magnet racing track structure according to claim 5 based on magnetic Skyrmion,
It is characterized in that, the thickness of two dielectric layers of arbitrary neighborhood is inconsistent to be accomplished in the following manner: by by different sections of Jie
Electric layer is made of different materials.
7. the JK flip-flop with annular magnet racing track structure according to claim 1 based on magnetic Skyrmion,
It is characterized in that, logic gate realizes that the process of JK flip-flop logical operation is as follows:
When input terminal INPUT J input is " 0 ", and INPUT K input is " 0 ", JK flip-flop, which is realized, keeps function: Ruo Sigeming
The initial position of son is the 3rd racing track, and the magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore initial defeated
It does well as high level " 1 ", since the 2nd racing track and the 4th racing track are without magnetic anisotropy energy gradient, final Skyrmion can stop
The 3rd racing track is stayed in, will detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, original " 1 " height will be kept by then exporting
Level state；Similarly, if the initial position of Skyrmion is the 1st racing track, the magnetic tunnel-junction for being now placed in the 3rd racing track can not be detected
To Skyrmion, therefore initial output state is low level " 0 ", since the 2nd racing track and the 4th racing track do not have magnetic anisotropy energy
Gradient, final Skyrmion can rest on the 1st racing track, can not detect Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, then
Output will keep original " 0 " low level state；
When input terminal INPUT J input is " 1 ", and INPUT K input is " 0 ", JK flip-flop realizes set function: the 4th racing track
There is no magnetic anisotropy energy gradient, the 2nd racing track has magnetic anisotropy energy gradient, if the initial position of Skyrmion is the 3rd racing track,
The magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore initial output state is high level " 1 ", due to
4th racing track does not have magnetic anisotropy energy gradient, and the 2nd racing track has magnetic anisotropy energy gradient, and final Skyrmion can rest on the 3rd
Racing track will detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, and original " 1 " high level shape will be kept by then exporting
State；Similarly, if the initial position of Skyrmion is the 1st racing track, the magnetic tunnel-junction for being now placed in the 3rd racing track can not detect Si Ge
Pine torch, therefore initial output state is low level " 0 ", since the 4th racing track does not have magnetic anisotropy energy gradient, the 2nd racing track has magnetic
Anisotropy energy gradient, Skyrmion can move to the 3rd racing track from the 1st racing track, and final Skyrmion will stay on the 3rd racing track
In, it will detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, then output can be changed into " 1 " high level state；
When input terminal INPUT J input is " 0 ", and INPUT K input is " 1 ", JK flip-flop realizes reset function, the 4th racing track
There is magnetic anisotropy energy gradient, the 2nd racing track does not have magnetic anisotropy energy gradient, if the initial position of Skyrmion is the 3rd racing track,
The magnetic tunnel-junction for being now placed in the 3rd racing track will detect that Skyrmion, therefore initial output state is high level " 1 ", due to
4th racing track has magnetic anisotropy energy gradient, and the 2nd racing track does not have magnetic anisotropy energy gradient, and Skyrmion can be moved from the 3rd racing track
To the 1st racing track, final Skyrmion can be rested in the 1st racing track, and the magnetic tunnel-junction positioned at the 3rd racing track can not detect Si Geming
Son, then output translates into " 0 " low level state；Similarly, it if the initial position of Skyrmion is the 1st racing track, is now placed in
The magnetic tunnel-junction of 3rd racing track can not detect Skyrmion, therefore initial output state is low level " 0 ", since the 4th racing track has
Magnetic anisotropy energy gradient, the 2nd racing track do not have magnetic anisotropy energy gradient, and final Skyrmion will stay in the 1st racing track, position
Skyrmion can not be detected in the magnetic tunnel-junction of the 3rd racing track, and then output can keep " 0 " high level state；
When input terminal INPUT J input is " 1 ", and INPUT K input is " 1 ", JK flip-flop realizes turn over function: the 2nd racing track
There is magnetic anisotropy energy gradient with the 4th racing track, if the initial position of Skyrmion is the 3rd racing track, is now placed in the 3rd racing track
Magnetic tunnel-junction will detect that Skyrmion, therefore initial output state is high level " 1 ", due to the 2nd racing track and the 4th racing track
There is magnetic anisotropy energy gradient, Skyrmion can move to the 1st racing track from the 3rd racing track within a clock cycle, at this time
Skyrmion can rest in the 1st racing track, can not detect Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, and then output will
It is changed into " 0 " low level state；Similarly, if the original state of Skyrmion is the 1st racing track, it is now placed in the magnetic tunnel of the 3rd racing track
Road knot can not detect Skyrmion, therefore initial output state is low level " 0 ", since the 2nd racing track and the 4th racing track exist
Magnetic anisotropy energy gradient, Skyrmion can move to the 3rd racing track from the 1st racing track within a clock cycle, at this time Si Geming
Son can rest in the 3rd racing track, be able to detect that Skyrmion positioned at the magnetic tunnel-junction of the 3rd racing track, and then output translates into
" 1 " high level state.
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| CN106877858A (en) * | 2016-12-27 | 2017-06-20 | 南京大学 | A kind of logic gates based on magnetic Skyrmion |
| CN108512545A (en) * | 2018-04-03 | 2018-09-07 | 电子科技大学 | A kind of reconfigurable logic door based on magnetic Skyrmion |
| KR101964904B1 (en) * | 2017-08-22 | 2019-04-02 | 울산과학기술원 | Meteal structure for forming skyrmion and method therefor |
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| CN106877858A (en) * | 2016-12-27 | 2017-06-20 | 南京大学 | A kind of logic gates based on magnetic Skyrmion |
| KR101964904B1 (en) * | 2017-08-22 | 2019-04-02 | 울산과학기술원 | Meteal structure for forming skyrmion and method therefor |
| CN108512545A (en) * | 2018-04-03 | 2018-09-07 | 电子科技大学 | A kind of reconfigurable logic door based on magnetic Skyrmion |
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| ACHIM ROSCH: "Electric control of skyrmions", 《NATURE NANOTECHNOLOGY》 * |
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