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Ginzburg-Landau Equations for (d+s)-Wave Superconductors in a Non-Fermi Liquid |
| HAN Qiang;ZHANG Li-yuan |
| Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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HAN Qiang, ZHANG Li-yuan 1998 Chin. Phys. Lett. 15 742-744 |
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Abstract The Ginzburg-Landau equations are microscopically derived for an anisotropic (d + s)-wave superconductor by assuming a non-Fermi-liquid normal state characterized by a nonvanishing exponent α. The transition temperature Tc as functions of α and the anisotropic parameter g which measures the ab anisotropy is studied. It is found that the anisotropic effect, which results in the enhancement of Tc and the nonzero bulk value of the s-wave order parameter, is strengthened due to the non-Fermi behavior.
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| Keywords:
74.20.De
74.72.-h
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Published: 01 October 1998
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| PACS: |
74.20.De
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(Phenomenological theories (two-fluid, Ginzburg-Landau, etc.))
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74.72.-h
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(Cuprate superconductors)
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