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Optical conductivity in non-equilibrium d-wave superconductors

J. P. Carbotte·E. Schachinger
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Abstract

We consider the optical conductivity of a d-wave BCS superconductor in the presence of a non-equilibrium distribution of excess quasiparticles. Two different simplified models used in the past for the s-wave case are considered and results compared. In the $T^\ast$-model of Parker the excess quasiparticles are assumed to be in a thermal distribution at some temperature $T^\ast$ larger than the equilibrium sample temperature. In the $μ^\ast$- model of Owen and Scalapino a chemical potential is introduced to accommodate the excess quasiparticles. Some of the results obtained are specific to the model, most are qualitatively similar in both.

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J. P. Carbotte, E. Schachinger. 2004-06-22. Optical conductivity in non-equilibrium d-wave superconductors. https://doi.org/10.1103/physrevb.70.014517

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