Published July 1, 1991
| Version v1
Journal article
Proximity effect on the superconducting transition temperature of YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices
Creators
- 1. Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, Texas 77204 (USA)
- 2. Department of Physics, Nanjing University, Nanjing, (China)
Description
The superconducting transition temperature Tc of YBa2Cu3O7-x/PrBa2Cu3O7-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 YBa2Cu3O7-x layer leaks to the semiconducting PrBa2Cu3O7-x layer plays a dominant role in explaining the depression of Tc 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 Tc in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices
Additional details
Publishing Information
- Journal Title
- Physical Review, B: Condensed Matter
- Journal Volume
- 44
- Journal Issue
- 1
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 411-414
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22068613
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; CHARGE EXCHANGE; COPPER OXIDES; GORKOV-ELIASHBERG THEORY; HIGH-TC SUPERCONDUCTORS; PROXIMITY EFFECT; QUATERNARY COMPOUNDS; TRANSITION TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS