Proximity effect on the superconducting transition temperature of YBa sub 2 Cu sub 3 O sub 7 minus x /PrBa sub 2 Cu sub 3 O sub 7 minus x superlattices
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, Texas 77204 (US)
- Department of Physics, Nanjing University, Nanjing, (China)
The superconducting transition temperature {ital T}{sub {ital c}} of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superlattices is studied theoretically with use of the Gor'kov equation. We show that the proximity effect in which the pair amplitude of the superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} layer leaks to the semiconducting PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} layer plays a dominant role in explaining the depression of {ital T}{sub {ital c}} in these superlattices with a minor modification from the charge-carrier-transfer effect across the Y and Pr interface. By adjusting the value of the hopping matrix between the Cu-O plane, our numerical result can be quantitatively compared with recent experimental measurement of {ital T}{sub {ital c}} in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superlattices.
- OSTI ID:
- 5748430
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 44:1; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHARGE EXCHANGE
COPPER COMPOUNDS
COPPER OXIDES
GORKOV-ELIASHBERG THEORY
HIGH-TC SUPERCONDUCTORS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHARGE EXCHANGE
COPPER COMPOUNDS
COPPER OXIDES
GORKOV-ELIASHBERG THEORY
HIGH-TC SUPERCONDUCTORS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES