Phase diagrams of singlet superconducting states with mixed symmetry

M. A. Timirgazin; V. F. Gilmutdinov; A. K. Arzhnikov

doi:10.1016/j.physc.2018.12.003

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arXiv · 1804.09513

Phase diagrams of singlet superconducting states with mixed symmetry

M. A. Timirgazin·V. F. Gilmutdinov·A. K. Arzhnikov

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Abstract

The competition between the singlet superconducting states with $s$- and d-wave symmetry of the order parameter is studied within a single-band model with nearest-neighbor attractive interaction. The zero- and finite-temperature ground state phase diagrams are constructed for different ratios between the nearest- and next-nearest-neighbor electron transfer integrals. The mixed $s+id$ pairing state is shown to form in the intermediate region between $s$- and d-waves. The temperature phase transitions between the pure and the mixed pairing state are found.

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M. A. Timirgazin, V. F. Gilmutdinov, A. K. Arzhnikov. 2018-04-25. Phase diagrams of singlet superconducting states with mixed symmetry. https://doi.org/10.1016/j.physc.2018.12.003

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