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Kinetic Theory for Response and Transport in Non-centrosymmetric Superconductors by Klam, Ludwig; Manske, Dirk; Einzel, Dietrich is a scholarly article available to read on EtoBox.

What is Kinetic Theory for Response and Transport in Non-centrosymmetric Superconductors about?

We formulate a kinetic theory for non-centrosymmetric superconductors at low temperatures in the clean limit. The transport equations are solved quite generally in spin- and particle-hole (Nambu) space by performing first a transformation into the band basis and second a Bogoliubov transformation to the quasiparticle-quasihole phase space. Our result is a particle-hole-symmetric, gauge-invariant and charge conserving description, which is valid in the whole quasiclassical regime. We calculate the current response, the specific heat capacity, and the Raman response function. For the Raman case, we investigate within this framework the polarization-dependence of the electronic (pair-breaking) Raman response for the recently discovered non-centrosymmetric superconductors 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

Author

Klam, Ludwig; Manske, Dirk; Einzel, Dietrich

Published

2010

Language

EN