WO1998022985A3 - Superconductive josephson junction, method of its preparation, and its use in squids - Google Patents

Superconductive josephson junction, method of its preparation, and its use in squids Download PDF

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Publication number
WO1998022985A3
WO1998022985A3 PCT/DK1997/000530 DK9700530W WO9822985A3 WO 1998022985 A3 WO1998022985 A3 WO 1998022985A3 DK 9700530 W DK9700530 W DK 9700530W WO 9822985 A3 WO9822985 A3 WO 9822985A3
Authority
WO
WIPO (PCT)
Prior art keywords
superconductive
josephson junction
preparation
grain boundary
quantum interference
Prior art date
Application number
PCT/DK1997/000530
Other languages
French (fr)
Other versions
WO1998022985A2 (en
Inventor
Yueqiang Shen
Original Assignee
Nkt Res Center As
Yueqiang Shen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nkt Res Center As, Yueqiang Shen filed Critical Nkt Res Center As
Priority to AU49416/97A priority Critical patent/AU4941697A/en
Priority to EP97912078A priority patent/EP0946996A2/en
Publication of WO1998022985A2 publication Critical patent/WO1998022985A2/en
Publication of WO1998022985A3 publication Critical patent/WO1998022985A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/035—Measuring direction or magnitude of magnetic fields or magnetic flux using superconductive devices
    • G01R33/0354—SQUIDS
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices
    • H10N60/01—Manufacture or treatment
    • H10N60/0912—Manufacture or treatment of Josephson-effect devices
    • H10N60/0941—Manufacture or treatment of Josephson-effect devices comprising high-Tc ceramic materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices
    • H10N60/10—Junction-based devices
    • H10N60/12—Josephson-effect devices
    • H10N60/124—Josephson-effect devices comprising high-Tc ceramic materials

Abstract

A superconductive Josephson junction device comprising a substrate layer (3) having at least one layer of a superconductive ceramic material (2) comprising at least a first (2a) and a second (2b) superconductive crystal; said first and second crystals being joined in at least one grain boundary (1) which forms a Josephson junction; wherein the grain boundary has a reduced content of oxygen exhibiting a normal resistance which is larger than that of a fully oxidized grain boundary; a method of its preparation; use of such Josephson junction devices in a superconductive quantum interference device; a method of preparing a superconductive quantum interference device; and an integrated multilayered superconductive quantum interference device.
PCT/DK1997/000530 1996-11-18 1997-11-18 Superconductive josephson junction, method of its preparation, and its use in squids WO1998022985A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU49416/97A AU4941697A (en) 1996-11-18 1997-11-18 Superconductive josephson junction, method of its preparation, and it s use in squids
EP97912078A EP0946996A2 (en) 1996-11-18 1997-11-18 Superconductive josephson junction, method of its preparation, and its use in squids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1307/96 1996-11-18
DK130796 1996-11-18

Publications (2)

Publication Number Publication Date
WO1998022985A2 WO1998022985A2 (en) 1998-05-28
WO1998022985A3 true WO1998022985A3 (en) 1998-06-25

Family

ID=8103396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1997/000530 WO1998022985A2 (en) 1996-11-18 1997-11-18 Superconductive josephson junction, method of its preparation, and its use in squids

Country Status (3)

Country Link
EP (1) EP0946996A2 (en)
AU (1) AU4941697A (en)
WO (1) WO1998022985A2 (en)

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WO2017163205A1 (en) * 2016-03-23 2017-09-28 Unisa Femtosecond laser based method for fabrication of micro- and nano-constriction type structures on a yba2cu3o7-x superconducting thin film
WO2018125543A1 (en) * 2016-12-29 2018-07-05 Google Llc Selective capping to reduce quantum bit dephasing
US11895931B2 (en) * 2017-11-28 2024-02-06 International Business Machines Corporation Frequency tuning of multi-qubit systems
US10340438B2 (en) 2017-11-28 2019-07-02 International Business Machines Corporation Laser annealing qubits for optimized frequency allocation
US10170681B1 (en) 2017-11-28 2019-01-01 International Business Machines Corporation Laser annealing of qubits with structured illumination
US10355193B2 (en) 2017-11-28 2019-07-16 International Business Machines Corporation Flip chip integration on qubit chips
US10418540B2 (en) 2017-11-28 2019-09-17 International Business Machines Corporation Adjustment of qubit frequency through annealing
US10586911B1 (en) * 2018-09-07 2020-03-10 International Business Machines Corporation Gradiometric parallel superconducting quantum interface device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985117A (en) * 1989-02-04 1991-01-15 Kabushiki Kaisha Riken Method of manufacturing josephson junctions
EP0523725A2 (en) * 1991-07-19 1993-01-20 Paul Dr. Müller Josephson contacts in high temperature superconductors and method of fabrication thereof
US5422337A (en) * 1992-05-29 1995-06-06 Sumitomo Electric Industries Step-edged grain boundary Josephson junction with 5 to 30 degrees inclined angle
US5439875A (en) * 1991-12-02 1995-08-08 Sumitomo Electric Industries, Ltd. Process for preparing Josephson junction device having weak link of artificial grain boundary

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985117A (en) * 1989-02-04 1991-01-15 Kabushiki Kaisha Riken Method of manufacturing josephson junctions
EP0523725A2 (en) * 1991-07-19 1993-01-20 Paul Dr. Müller Josephson contacts in high temperature superconductors and method of fabrication thereof
US5439875A (en) * 1991-12-02 1995-08-08 Sumitomo Electric Industries, Ltd. Process for preparing Josephson junction device having weak link of artificial grain boundary
US5422337A (en) * 1992-05-29 1995-06-06 Sumitomo Electric Industries Step-edged grain boundary Josephson junction with 5 to 30 degrees inclined angle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PHYSICAL REVIEW B, Volume 53, No. 21, June 1996, H. DARHMAOUI et al., "Crossover Effects in the Temperature Dependence of the Critical Current in YBa2Cu307-delta", pages 14625-14629. *

Also Published As

Publication number Publication date
EP0946996A2 (en) 1999-10-06
WO1998022985A2 (en) 1998-05-28
AU4941697A (en) 1998-06-10

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