Ginzburg Landau Theory for d-Wave Pairing and Fourfold Symmetric Vortex Core Structure

Kaoki Enomoto; Masanori Ichioka; Kazushige Machida

doi:10.1143/JPSJ.66.204

Ginzburg Landau Theory for d-Wave Pairing and Fourfold Symmetric Vortex Core Structure

Kaoki Enomoto, Masanori Ichioka, Kazushige Machida

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The Ginzburg Landau theory for d_x2-y2-wave superconductors is constructed, by starting from the Gor'kov equation with including correction terms up to the next order of ln(T_c/T). Some of the non-local correction terms are found to break the cylindrical symmetry and lead to the fourfold symmetric core structure, reflecting the internal degree of freedom in the pair potential. Using this extended Ginzburg Landau theory, we investigate the fourfold symmetric structure of the pair potential, current and magnetic field around an isolated single vortex, and clarify concretely how the vortex core structure deviates from the cylindrical symmetry in the d_x2-y2-wave superconductors.

Original language	English
Pages (from-to)	204-214
Number of pages	11
Journal	journal of the physical society of japan
Volume	66
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.66.204
Publication status	Published - Jan 1997

Keywords

Ginzburg Landau theory
Vortex core structure
d-wave superconductor

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.66.204

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abstract = "The Ginzburg Landau theory for dx2-y2-wave superconductors is constructed, by starting from the Gor'kov equation with including correction terms up to the next order of ln(Tc/T). Some of the non-local correction terms are found to break the cylindrical symmetry and lead to the fourfold symmetric core structure, reflecting the internal degree of freedom in the pair potential. Using this extended Ginzburg Landau theory, we investigate the fourfold symmetric structure of the pair potential, current and magnetic field around an isolated single vortex, and clarify concretely how the vortex core structure deviates from the cylindrical symmetry in the dx2-y2-wave superconductors.",

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AB - The Ginzburg Landau theory for dx2-y2-wave superconductors is constructed, by starting from the Gor'kov equation with including correction terms up to the next order of ln(Tc/T). Some of the non-local correction terms are found to break the cylindrical symmetry and lead to the fourfold symmetric core structure, reflecting the internal degree of freedom in the pair potential. Using this extended Ginzburg Landau theory, we investigate the fourfold symmetric structure of the pair potential, current and magnetic field around an isolated single vortex, and clarify concretely how the vortex core structure deviates from the cylindrical symmetry in the dx2-y2-wave superconductors.

KW - Ginzburg Landau theory

KW - Vortex core structure

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Ginzburg Landau Theory for d-Wave Pairing and Fourfold Symmetric Vortex Core Structure

Abstract

Keywords

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