Proximity effect in zero field with the Landau-Ginzburg equation. I

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.3952· OSTI ID:6330134

Chen, Jian Hua ^[1]

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1. Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH (USA)

The proximity effect can be explained by solving the complete Landau-Ginzburg equation. The solution of the equation naturally produces a simple and explicit expression of the transition temperature for a film sandwich composed of a bulk superconductor and a normal metal. The general result obtained is {ital T}{sub {ital c}{ital S}{ital N}}/{ital T}{sub {ital c}{ital S}}={ital t}=1{minus}{ital B}{sub 0}{ital d}{sub {ital N}}{xi}{sub {ital S}}/({ital d}{sub {ital S}}{sup 2}+3{ital d}{sub {ital N}}{ital d}{sub {ital S}}/{ital k}) or an alternative, {ital t}=(1{minus}{ital B}{sub 0}{ital d}{sub {ital N}}{xi}{sub {ital S}}/({ital d}{sub {ital S}}{sup 2}+3{ital d}{sub {ital N}}{ital d}{sub {ital S}}/{ital k})){sup 1/2}. The theoretical calculations fit experimental results very well.

• OSTI ID: 6330134
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:7; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FILMS
GINZBURG-LANDAU THEORY
PHYSICAL PROPERTIES
PROXIMITY EFFECT
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION TEMPERATURE