Pairing state with a time-reversal symmetry breaking in FeAs-based superconductors.

We investigate the competition between the extended s+/--wave and dx2-y2-wave pairing order parameters in the iron-based superconductors. Because of the frustrating pairing interactions among the electron and the hole Fermi pockets, a time-reversal symmetry breaking s+id pairing state could be favored. We analyze this pairing state within the Ginzburg-Landau theory and explore the experimental consequences. In such a state, spatial inhomogeneity induces a supercurrent near a nonmagnetic impurity and the corners of a square sample. The resonance mode between the s+/-- and dx2-y2-wave order parameters can be detected through the B1g Raman spectroscopy.

• Publication year

  2008

• Venue

  Physical Review Letters

• Publication date

  2008-10-06

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.102.217002arXiv 0810.0887PMID 19519129
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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