Jan, 1997
Ginzburg Landau theory for d-wave pairing and fourfold symmetric vortex core structure
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
- ,
- ,
- Volume
- 66
- Number
- 1
- First page
- 204
- Last page
- 214
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1143/JPSJ.66.204
- Publisher
- PHYSICAL SOC JAPAN
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.
- Link information
- ID information
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- DOI : 10.1143/JPSJ.66.204
- ISSN : 0031-9015
- Web of Science ID : WOS:A1997WF90000034