{ital s}- and {ital d}{sub {ital xy}}-wave components induced around a vortex in {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}}-wave superconductors
- Department of Physics, Kyoto University, Kyoto 606-01 (Japan)
- Department of Physics, Okayama University, Okayama 700 (Japan)
The vortex structure of {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}}-wave superconductors is microscopically analyzed in the framework of the quasiclassical Eilenberger equations. If the pairing interaction contains an {ital s}-wave ({ital d}{sub {ital xy}}-wave) component in addition to a {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}}-wave component, the {ital s}-wave ({ital d}{sub {ital xy}}-wave) component of the order parameter is necessarily induced around a vortex in {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}}-wave superconductors. The spatial distribution of the induced {ital s}-wave and {ital d}{sub {ital xy}}-wave components is calculated. The {ital s}-wave component has an opposite winding number around the vortex near the {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}}-vortex core and its amplitude has the shape of a four-lobe clover. These are consistent with results based on the Ginzburg-Landau (GL) theory. The amplitude of the {ital d}{sub {ital xy}} component has the shape of an octofoil. The mixing of the {ital d}{sub {ital xy}} component cannot be explained by the GL theory, unless nonlocal correction terms are included. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 278689
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 53, Issue 5; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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