Intrinsic Optical Dichroism in the Chiral Superconducting State ofSr2RuO4

2011/11/30 by Karol I. Wysokinski, K. I. Wysokiński, James F. Annett +3 · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics #Physics of Superconductivity and Magnetism #Topological Materials and Phenomena #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.108.077004

published as Phys. Rev. Lett. 108, 077004 (2012) · 4+ pages, 4 figures, published version

openalex publication_date 2012/02/16 · arxiv created 2012/04/18 · arxiv updated 2012/04/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present an analysis of the Hall conductivity σ(xy)(ω,T) in time reversal symmetry breaking states of exotic superconductors. We find that the dichroic signal is nonzero in systems with interband order parameters. This new intrinsic mechanism may explain the Kerr effect observed in strontium ruthenate and possibly other superconductors. We predict coherence factor effects in the temperature dependence of the imaginary part of the ac Hall conductivity Imσ(xy)(ω,T), which can be tested experimentally.

Citations

• Is Sr2RuO4a chiral p-wave superconductor?
• Impurity-induced polar Kerr effect in a chiralp-wave superconductor
• Topological insulators and superconductors
• Collective modes and electromagnetic response of a chiral superconductor
• Interlayer coupling andp-wave pairing in strontium ruthenate
• Gauge-invariant electromagnetic response of a chiralpx+ipysuperconductor
• Gap nodes and time reversal symmetry breaking in strontium ruthenate

Cited by

• Theory of the orbital moment in a superconductor
• Charge and spin collective modes in a quasi-one-dimensional model of Sr<mml:mrow/>2RuO<mml:mrow/>4