Phase diagrams of singlet superconducting states with mixed symmetry

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.

14 pages, 11 figures

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Cited by in corpus (4)

• Interplay of magnetism and superconductivity in 2D extended Hubbard model
• Thermal fluctuations in superconducting phases with chiral $d+id$ and $s$ symmetry on a triangular lattice
• Stability of Mixed-Symmetry Superconducting States with Broken Time-Reversal Symmetry against Lattice Distortions
• Mixed-symmetry superconductivity and the energy gap