High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O

Ginley, David S; Hietala, Vincent M; Hohenwarter, Gert K. G.; Martens, Jon S; Plut, Thomas A; Tigges, Chris P; Vawter, Gregory A; Zipperian, Thomas E

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O

Abstract

A process for formulating non-hysteretic and hysteretic Josephson junctions using HTS materials which results in junctions having the ability to operate at high temperatures while maintaining high uniformity and quality. The non-hysteretic Josephson junction is formed by step-etching a LaAlO.sub.3 crystal substrate and then depositing a thin film of TlCaBaCuO on the substrate, covering the step, and forming a grain boundary at the step and a subsequent Josephson junction. Once the non-hysteretic junction is formed the next step to form the hysteretic Josephson junction is to add capacitance to the system. In the current embodiment, this is accomplished by adding a thin dielectric layer, LaA1O.sub.3, followed by a cap layer of a normal metal where the cap layer is formed by first depositing a thin layer of titanium (Ti) followed by a layer of gold (Au). The dielectric layer and the normal metal cap are patterned to the desired geometry.

Inventors:

Ginley, David S ^[1]; Hietala, Vincent M ^[2]; Hohenwarter, Gert K. G. ^[3]; Martens, Jon S ^[4]; Plut, Thomas A ^[5]; Tigges, Chris P ^[5]; Vawter, Gregory A ^[5]; Zipperian, Thomas E ^[5]

Evergreen, CO
Placitas, NM
Madison, WI
Sunnyvale, CA
Albuquerque, NM

Issue Date:: Tue Oct 25 00:00:00 EDT 1994

Research Org.:: AT&T

OSTI Identifier:: 869576

Patent Number(s):: 5358928

Application Number:: 07/949,098

Assignee:: Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Show more

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S505/702 - Josephson junction present
Y10S505/783 - Thallium-, e.g. Tl2CaBaCu308
Y10S505/832 - Josephson junction type

Show less

DOE Contract Number:: AC04-76DP00789

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: temperature; superconductor; step-edge; josephson; junctions; ti-ca-ba-cu-o; process; formulating; non-hysteretic; hysteretic; materials; results; ability; operate; temperatures; maintaining; uniformity; quality; junction; formed; step-etching; laalo; crystal; substrate; depositing; film; tlcabacuo; covering; step; forming; grain; boundary; subsequent; form; add; capacitance; current; embodiment; accomplished; adding; dielectric; layer; laa1o; followed; cap; normal; metal; titanium; gold; patterned; desired; geometry; josephson junction; cap layer; josephson junctions; normal metal; temperature superconductor; dielectric layer; grain boundary; crystal substrate; metal cap; /505/257/427/

Citation Formats


                    Ginley, David S, Hietala, Vincent M, Hohenwarter, Gert K. G., Martens, Jon S, Plut, Thomas A, Tigges, Chris P, Vawter, Gregory A, and Zipperian, Thomas E. High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O.  United States: N. p., 1994. 
        Web.

Copy to clipboard


                    Ginley, David S, Hietala, Vincent M, Hohenwarter, Gert K. G., Martens, Jon S, Plut, Thomas A, Tigges, Chris P, Vawter, Gregory A, & Zipperian, Thomas E. High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O.  United States.

Copy to clipboard


                    Ginley, David S, Hietala, Vincent M, Hohenwarter, Gert K. G., Martens, Jon S, Plut, Thomas A, Tigges, Chris P, Vawter, Gregory A, and Zipperian, Thomas E. Tue .  
        "High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O".  United States.  https://www.osti.gov/servlets/purl/869576.

Copy to clipboard


                    
@article{osti_869576,

  title        = {High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O},

  author       = {Ginley, David S and Hietala, Vincent M and Hohenwarter, Gert K. G. and Martens, Jon S and Plut, Thomas A and Tigges, Chris P and Vawter, Gregory A and Zipperian, Thomas E},

  abstractNote = {A process for formulating non-hysteretic and hysteretic Josephson junctions using HTS materials which results in junctions having the ability to operate at high temperatures while maintaining high uniformity and quality. The non-hysteretic Josephson junction is formed by step-etching a LaAlO.sub.3 crystal substrate and then depositing a thin film of TlCaBaCuO on the substrate, covering the step, and forming a grain boundary at the step and a subsequent Josephson junction. Once the non-hysteretic junction is formed the next step to form the hysteretic Josephson junction is to add capacitance to the system. In the current embodiment, this is accomplished by adding a thin dielectric layer, LaA1O.sub.3, followed by a cap layer of a normal metal where the cap layer is formed by first depositing a thin layer of titanium (Ti) followed by a layer of gold (Au). The dielectric layer and the normal metal cap are patterned to the desired geometry.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Oct 25 00:00:00 EDT 1994},

  month        = {Tue Oct 25 00:00:00 EDT 1994}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Substrate step‐edge YBa ₂ Cu ₃ O ₇ rf SQUIDs
journal, February 1991

Daly, K. P.; Dozier, W. D.; Burch, J. F.
Applied Physics Letters, Vol. 58, Issue 5
https://doi.org/10.1063/1.104581

Morphology control and high critical currents in superconducting thin films in the Tl-Ca-Ba-Cu-O system
journal, August 1989

Ginley, D. S.; Kwak, J. F.; Venturini, E. L.
Physica C: Superconductivity, Vol. 160, Issue 1
https://doi.org/10.1016/0921-4534(89)90450-4

Practical high T _c Josephson junctions and dc SQUIDs operating above 85 K
journal, June 1991

Di Iorio, M. S.; Yoshizumi, S.; Yang, K‐Y.
Applied Physics Letters, Vol. 58, Issue 22
https://doi.org/10.1063/1.105231

Bi‐epitaxial grain boundary junctions in YBa ₂ Cu ₃ O ₇
journal, August 1991

Char, K.; Colclough, M. S.; Garrison, S. M.
Applied Physics Letters, Vol. 59, Issue 6
https://doi.org/10.1063/1.105355

Tl‐Ca‐Ba‐Cu‐O step‐edge Josephson junctions
journal, March 1992

Martens, J. S.; Zipperian, T. E.; Vawter, G. A.
Applied Physics Letters, Vol. 60, Issue 9
https://doi.org/10.1063/1.107458

Fabrication of Tl‐Ca‐Ba‐Cu‐O superconducting thin films on LaAlO ₃ substrates
journal, April 1990

Subramanyam, G.; Radpour, F.; Kapoor, V. J.
Applied Physics Letters, Vol. 56, Issue 18
https://doi.org/10.1063/1.103104

Fabrication of TlCaBaCuO step‐edge Josephson junctions with hysteretic behavior
journal, February 1992

Martens, J. S.; Hietala, V. M.; Zipperian, T. E.
Applied Physics Letters, Vol. 60, Issue 8
https://doi.org/10.1063/1.106506

Principles of Superconductive Devices and Circuits
journal, February 1982

Van Duzer, T.; Turner, C. W.; McDonald, D. G.
Physics Today, Vol. 35, Issue 2
https://doi.org/10.1063/1.2914944

Fabrication of Tunnel Junction Structures
book, January 1989

Donaldson, G. B.
Superconducting Electronics
https://doi.org/10.1007/978-3-642-83885-9_4

High-T/sub c/ thin-film magnetometer
journal, March 1991

Miklich, A. H.; Wellstood, F. C.; Kingston, J. J.
IEEE Transactions on Magnetics, Vol. 27, Issue 2
https://doi.org/10.1109/20.133896

High-speed Josephson processor technology
journal, March 1991

Hasuo, S.; Kotani, S.; Inoue, A.
IEEE Transactions on Magnetics, Vol. 27, Issue 2
https://doi.org/10.1109/20.133748

Quantum limited quasiparticle mixers at 100 GHz
journal, March 1991

Mears, C. A.; Hu, Q.; Richards, P. L.
IEEE Transactions on Magnetics, Vol. 27, Issue 2
https://doi.org/10.1109/20.133934

Ideal tunneling characteristics in Ba _{1− x} K _x BiO ₃ point‐contact junctions with Au and Nb tips
journal, November 1990

Huang, Qiang; Zasadzinski, J. F.; Gray, K. E.
Applied Physics Letters, Vol. 57, Issue 22
https://doi.org/10.1063/1.104172

Similar Records in DOE Patents and OSTI.GOV collections:

High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O

Patent Ginley, D S; Hietala, V M; Hohenwarter, G K.G.; ...

A process is disclosed for formulating non-hysteretic and hysteretic Josephson junctions using HTS materials which results in junctions having the ability to operate at high temperatures while maintaining high uniformity and quality. The non-hysteretic Josephson junction is formed by step-etching a LaAlO[sub 3] crystal substrate and then depositing a thin film of TlCaBaCuO on the substrate, covering the step, and forming a grain boundary at the step and a subsequent Josephson junction. Once the non-hysteretic junction is formed the next step to form the hysteretic Josephson junction is to add capacitance to the system. In the current embodiment, this ismore » « less
Method of fabricating a (1223) Tl-Ba-Ca-Cu-O superconductor

Patent Tkaczyk, John Eric [Delanson, NY]; Lay, Kenneth Wilbur [Schenectady, NY]; He, Qing [Knoxville, TN]

A method is disclosed for fabricating a polycrystalline <223> thallium-containing superconductor having high critical current at elevated temperatures and in the presence of a magnetic field. A powder precursor containing compounds other than thallium is compressed on a substrate. Thallium is incorporated in the densified powder precursor at a high temperature in the presence of a partial pressure of a thallium-containing vapor.
Full Text Available
Tl-Ca-Ba-Cu-O step-edge Josephson junctions

Journal Article Martens, J S; Zipperian, T E; Vawter, G A; ... - Applied Physics Letters; (United States)

There has been considerable progress in the development of nonhysteretic Josephson junction microelectronic technologies for YBaCuO. Such a technology for Tl-Ca-Ba-Cu-O junctions would be interesting because of the higher operating temperatures and the very different grain boundary structures in the different cuprate superconductors. We have successfully made step-edge junctions with TlCaBaCuO grown on ion-milled LaAlO{sub 3}. Nonhysteretic grain boundary-based junctions have been demonstrated with critical current-normal state resistance products exceeding 5 mV at 77 K, critical current densities ranging from 500 to 25 000 A/cm{sup 2}, and critical current versus field profiles suggesting very uniform junctions. Yield has exceeded 70%more » « less
DOI: https://doi.org/10.1063/1.107458
Method of forming superconducting Tl-Ba-Ca-Cu-O films

Patent Wessels, Bruce W.; Marks, Tobin J.; Richeson, Darrin S.; ...

A method of forming a superconducting Tl-Ba-Ca-Cu-O film is disclosed, which comprises depositing a Ba-Ca-Cu-O film on a substrate by MOCVD, annealing the deposited film and heat-treating the annealed film in a closed circular vessel with TlBa.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x and cooling to form said superconducting film of TlO.sub.m Ba.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+2, wherein m=1,2 and n=1,2,3.
Full Text Available
Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors

Patent Hinks, David G [Lemont, IL]; Capone, II, Donald W. (Northbridge, MA)

A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.
Full Text Available

Similar Records

Title: High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O

Abstract

Citation Formats

Substrate step‐edge YBa 2 Cu 3 O 7 rf SQUIDs journal, February 1991

Morphology control and high critical currents in superconducting thin films in the Tl-Ca-Ba-Cu-O system journal, August 1989

Practical high T c Josephson junctions and dc SQUIDs operating above 85 K journal, June 1991

Bi‐epitaxial grain boundary junctions in YBa 2 Cu 3 O 7 journal, August 1991

Tl‐Ca‐Ba‐Cu‐O step‐edge Josephson junctions journal, March 1992

Fabrication of Tl‐Ca‐Ba‐Cu‐O superconducting thin films on LaAlO 3 substrates journal, April 1990

Fabrication of TlCaBaCuO step‐edge Josephson junctions with hysteretic behavior journal, February 1992

Principles of Superconductive Devices and Circuits journal, February 1982

Fabrication of Tunnel Junction Structures book, January 1989

High-T/sub c/ thin-film magnetometer journal, March 1991

High-speed Josephson processor technology journal, March 1991

Quantum limited quasiparticle mixers at 100 GHz journal, March 1991

Ideal tunneling characteristics in Ba 1− x K x BiO 3 point‐contact junctions with Au and Nb tips journal, November 1990

Substrate step‐edge YBa ₂ Cu ₃ O ₇ rf SQUIDs
journal, February 1991

Morphology control and high critical currents in superconducting thin films in the Tl-Ca-Ba-Cu-O system
journal, August 1989

Practical high T _c Josephson junctions and dc SQUIDs operating above 85 K
journal, June 1991

Bi‐epitaxial grain boundary junctions in YBa ₂ Cu ₃ O ₇
journal, August 1991

Tl‐Ca‐Ba‐Cu‐O step‐edge Josephson junctions
journal, March 1992

Fabrication of Tl‐Ca‐Ba‐Cu‐O superconducting thin films on LaAlO ₃ substrates
journal, April 1990

Fabrication of TlCaBaCuO step‐edge Josephson junctions with hysteretic behavior
journal, February 1992

Principles of Superconductive Devices and Circuits
journal, February 1982

Fabrication of Tunnel Junction Structures
book, January 1989

High-T/sub c/ thin-film magnetometer
journal, March 1991

High-speed Josephson processor technology
journal, March 1991

Quantum limited quasiparticle mixers at 100 GHz
journal, March 1991

Ideal tunneling characteristics in Ba _{1− x} K _x BiO ₃ point‐contact junctions with Au and Nb tips
journal, November 1990