Collective modes and electromagnetic response of a chiral superconductor

Abstract

Motivated by the recent controversy surrounding the Kerr effect measurements in strontium ruthenate \cite{xia:167002}, we examine the electromagnetic response of a clean chiral p-wave superconductor. When the contributions of the collective modes are accounted for, the Hall response in a clean chiral superconductor is smaller by several orders of magnitude than previous theoretical predictions and is too small to explain the experiment. We also uncover some unusual features of the collective modes of a chiral superconductor, namely, that they are not purely longitudinal and couple to external transverse fields.

8 pages

References in corpus (5)

• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Gauge-invariant electromagnetic response of a chiral px+ipy superconductor
• Theory of the high-frequency chiral optical response in a p_x+ip_y superconductor
• Sr_2 Ru O_4 : Broken Time-Reversal Symmetry in the Superconducting state
• Spin-Hall effect in triplet chiral superconductors and graphene

Cited by in corpus (3)

• Is Sr2RuO4 a Chiral P-Wave Superconductor?
• Frequency and temperature dependence of the anomalous Hall conductivity in a chiral px+ipy superconductor with impurities
• Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor