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Optical conductivity of a superconductor withd x 2− y 2 symmetry

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Abstract

Using a simplified Eliashberg formulation in which we keep only that part of the susceptibility which is separable and of\(d_{x^2 - y^2 } \) symmetry in the pairing channel and keep the isotropic part in the renormalization channel, we have calculated the ac conductivity in the superconducting state. At zero temperature, in the clean limit, we find a finite amount of absorption at any frequency, however small, although it is substantially reduced over its normal-state value. Besides this boson-assisted absorption, when impurities are added a new channel is opened up in which momentum is given up to the impurity system and absorption proceeds directly through the creation of a hole-particle pair. Born and unitary impurity scattering are considered.

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Authors and Affiliations

  1. Physics Department, McMaster University, L8S 4M1, Hamilton, Ontario, Canada

    C. Jiang & J. P. Carbotte

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  1. C. Jiang
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  2. J. P. Carbotte
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Additional information

This research was supported in part by the Canadian Institute for Advanced Research (CIASR), by the Ontario Centre for Materials Research (OCMR), and by the Natural Sciences and Engineering Research Council o f Canada (NSERC).

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Jiang, C., Carbotte, J.P. Optical conductivity of a superconductor withd x 2− y 2 symmetry. J Supercond 7, 559–561 (1994). https://doi.org/10.1007/BF00728459

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  • DOI: https://doi.org/10.1007/BF00728459

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