Superconducting pairing symmetry on the extended Hubbard model in the presence of the Rashba-type spin-orbit coupling

Keisuke Shigeta, Seiichiro Onari, Yukio Tanaka

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to study the pairing symmetry in non-centrosymmetric superconductors, we solve the linearized Éliashberg's equation on the two-dimensional extended Hubbard model in the presence of the Rashba-type spin-orbit coupling (RSOC) within the random phase approximation. In the presence of the RSOC, three types of pairing symmetries appear in the phase diagram with respect to the on-site Coulomb repulsion U and off-site one V. Each of the pairing symmetries is an admixture of the spin-singlet and spin-triplet ones. On the basis of our analytical study, it is found that the admixture of the spin-singlet and spin-triplet components depends on not only the predominant pairing symmetry but also the dispersion relation and pairing interaction.

Original languageEnglish
Article number014702
JournalJournal of the Physical Society of Japan
Volume82
Issue number1
DOIs
Publication statusPublished - Jan 2013
Externally publishedYes

Keywords

  • Extended Hubbard model
  • Non-centrosymmetric
  • Pairing symmetry
  • Random phase approximation
  • Spin-orbit coupling
  • Strongly correlated electron system
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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