Broken Time Reversal Symmetry and Superconducting States in the Cuprates

Abstract

Recently, Kaminski et al. have reported that time reversal symmetry is broken in the pseudogap phase in the high temperature superconducting material Bi_2Sr_2CaCu_2O_{2+δ} (Bi-2212). Here we examine the role of translationally invariant broken time reversal states on d_{x^2-y^2} superconductors. In particular, we determine the change in the superconducting order parameter structure. We find that the broken time reversal pseudogap state that is consistent with the experiment of Kaminski et al., gives rise to a novel mixed singlet-triplet pairing d+ip phase. This d+ip state is shown to give rise to a helical superconducting phase. Consequences of this d+ip state on Josephson experiments are discussed.

5 pages, 1 figure

References in corpus (2)

• Order parameter symmetry in ferromagnetic superconductors
• Symmetry Considerations for detection of Time-reversal Breaking Phases in Cuprates by X-ray Diffraction and Absorption

Cited by in corpus (10)

• A Theory of the Pseudogap State of the Cuprates
• Novel magnetic order in pseudogap state of high Tc copper oxides superconductors
• Evidence for Intra-Unit-Cell magnetic order in Bi2Sr2CaCu2O8+d
• Some Experimental Signatures to look for Time-reversal Violating superconductors
• Josephson effect for superconductors lacking center of inversion
• Zeros of the order parameter of d_{x^2-y^2} superconducting film in the presence of uniform current
• Chiral d+is superconducting state in the two dimensional t-t' Hubbard model
• Twisted superfluid and supersolid phases of triplons in bilayer honeycomb magnets
• Manifestation of the magnetic moments of Cooper pairs in low-temperature properties of superconducting thin-film rings
• Pair-mixing induced Time-reversal-breaking superconductivity