Electronic Raman Scattering in Noncentrosymmetric Superconductors

Ludwig Klam; Dietrich Einzel; Dirk Manske

doi:10.1103/PhysRevLett.102.027004

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Electronic Raman Scattering in Noncentrosymmetric Superconductors

Ludwig Klam, Dietrich Einzel, Dirk Manske

DOI 10.1103/PhysRevLett.102.027004 · Physical Review Letters

T1

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Abstract

We formulate a theory for the polarization dependence of the electronic (pair-breaking) Raman response for the recently discovered noncentrosymmetric superconductors in the clean limit at zero temperature. Possible applications include the systems CePt3Si and Li2PdxPt3−xB 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.75	Pressure not reported	unknown
Li2PdxPt3-xB Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.2	Pressure not reported	unknown