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Exact Results on Superconductivity due to Interband Coupling

Y. Morita·Y. Hatsugai·M. Kohmoto
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Abstract

We present a family of exactly solvable models at arbitrary filling in any dimensions which exhibit novel superconductivity with interband pairing. By the use of the hidden $SU(2)$ algebra the Hamiltonians were diagonalized explicitly. The zero-temperature phase diagrams and the thermodynamic properties are discussed. Several new properties are revealed which are different from those of the BCS-type superconductor.

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Y. Morita, Y. Hatsugai, M. Kohmoto. 1995-06-02. Exact Results on Superconductivity due to Interband Coupling. https://doi.org/10.1103/physrevb.53.8561

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