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Effect of Band Structure on the Symmetry of Superconducting States

Kazuhiro Kuboki
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Abstract

Effects of the band structure on the symmetry of superconducting (SC) states are studied. For a square lattice system with a nearest-neighbor attractive interaction, SC states with various symmetries are found by changing the band structure, or, the shape of the Fermi surface. The spin-triplet ($(p_x + ip_y)$-wave) and spin-singlet ($d$- or s-wave) SC states, and states with their coexistence ($d + ip_y$, $s + ip_y$) can be stabilized within the same type of interaction. The stability of interlayer-pairing states with line nodes is also examined, and its relation to the SC state of Sr$_2$RuO$_4$ is discussed.

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Kazuhiro Kuboki. 2001-02-06. Effect of Band Structure on the Symmetry of Superconducting States. https://doi.org/10.1143/jpsj.70.2698

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