Superconductivity in Two-Band Model : Condensed Matter and Statistical Physics
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概要
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Superconductivity in two-band models involving non s-wave pairing is investigated. We consider the following case: one band has s-wave pairing interaction and the other has non s-wave pairing interaction, and only s-wave Cooper pairs can be transferred between bands. Possible appearance of non s-wave superconducting order parameter in an s-wave superconducting state and its onset temperature are discussed. The non s-wave order parameter is suppressed by s-wave superconductivity, and cannot appear unless the non s-wave pairing interaction is stronger than critical value. We also consider the appearance of s-wave superconducting order parameter in a non s-wave superconducting state. In this case, the s-wave order parameter can always appear on lowering temperature. Temperature dependence of the order parameters and the specific heat are shown in a simple case.
- 理論物理学刊行会の論文
- 1993-09-25
著者
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ICHIOKA Masanori
Department of Physics, Okayama University
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Ichioka M
Okayama Univ. Okayama
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Ohmi T
Kyoto Univ. Kyoto
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Ohmi Tetsuo
Department Of Physics Kyoto University
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Ohmi Tetsuo
Depart Of Physics Kyoto University
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TSUNETO Toshihiko
Department of Physics, Kyoto University
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Ichioka M
Department Of Physics Okayama University
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Tsuneto T
Kyoto Univ. Kyoto
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Tsuneto Toshihiko
Department Of Physics Faculty Of Engineering Science Osaka University
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Ichioka Masanori
Department Of Physics Kyoto University
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ICHIOKA Masanori
Department of Physics, Kyoto University
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TSUNETO Toshihiko
Department of Physics, Wakayama University
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