Ginzburg-Landau theory of defects in {ital d}-wave superconductors

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.16168· OSTI ID:399830

Alvarez, J J; Buscaglia, G C; Balseiro, C A ^[1]

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1. Comision Nacional de Energia Atomica, Centro Atomico Bariloche, and Instituto Balseiro, 8400 San Carlos de Bariloche (Argentina)

We study the influence of defects on the structure of the order parameter for a {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} superconductor. Using a Ginzburg-Landau theory which couples the {ital d}-wave and {ital s}-wave components of the order parameter, we show that in the vicinity of defects there is an induced {ital s}-wave pairing that extends up to a length scale given by the coherence length. We present results for columnar defects along different directions, twin boundaries, and point defects. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 399830
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 22 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COHERENCE LENGTH
CRYSTAL DEFECTS
CUPRATES
D WAVES
GINZBURG-LANDAU THEORY
ORDER PARAMETERS
SUPERCONDUCTORS
TWINNING