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arXiv · 0809.5170

Electronic Raman scattering in non-centrosymmetric superconductors

Ludwig Klam·Dietrich Einzel·Dirk Manske
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Abstract

We formulate a theory for the polarization-dependence of the electronic (pair-breaking) Raman response for the recently discovered non-centrosymmetric superconductors in the clean limit at zero temperature. Possible applications include the systems CePt$_3$Si and Li$_2$Pd$_x$Pt$_{3-x}$B which reflect the two important classes of the involved spin-orbit coupling. We provide analytical expressions for the Raman vertices for these two classes and calculate the polarization dependence of the electronic spectra. We predict a two-peak structure and different power laws with respect to the unknown relative magnitude of the singlet and triplet contributions to the superconducting order parameter, revealing a large variety of characteristic fingerprints of the underlying condensate.

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Ludwig Klam, Dietrich Einzel, Dirk Manske. 2008-09-30. Electronic Raman scattering in non-centrosymmetric superconductors. https://doi.org/10.1103/physrevlett.102.027004

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