Phase diagrams of singlet superconducting states with mixed symmetry

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 betw...

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Bibliographic Details
Published in:arXiv.org 2018-04
Main Authors: Timirgazin, M A, Gilmutdinov, V F, Arzhnikov, A K
Format: Article
Language:English
Subjects:
Electron transfer
Order parameters
Phase diagrams
Phase transitions
Superconductivity
Symmetry
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1804.09513