Odd-frequency pairings in a non-centrosymmetric system |
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Authors: | K. Yada S. Onari Y. Tanaka |
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Affiliation: | aToyota Physical and Chemical Research Institute, Nagakute-cho 480-1192, Japan;bDepartment of Applied Physics, Nagoya University, Nagoya 464-8603, Japan |
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Abstract: | We study possible pairing symmetries of non-centrosymmetric superconductors in the Hubbard model with the Rashba-type spin–orbit interaction (RSOI). Because of the breakdown of space inversion symmetry due to RSOI, a mixture of pairing states with different symmetries can emerge. We find that the RSOI mixes not only the spin-singlet even-parity pairing and spin-triplet odd-parity pairings with even-frequency symmetry, but it also mixes the spin-singlet odd-parity pairing and spin-triplet even-parity pairings with odd-frequency symmetry. |
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Keywords: | Non-centrosymmetric superconductivity Rashba-type spin– orbit interaction |
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