Electronic Raman scattering in non-centrosymmetric superconductors

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.

4 pages, 4 figures

References in corpus (10)

• Heavy fermion superconductivity and magnetic order in non-centrosymmetric $CeP{t}_{3}Si$
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• Superconductivty without inversion symmetry: MnSi versus CePt_3Si
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Electronic Raman scattering in superconductors as a probe of anisotropic electron pairing
• Crystal Symmetry, Electron-Phonon Coupling, and Superconducting Tendencies in Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Gap structure in noncentrosymmetric superconductors
• On the spin susceptibility of noncentrosymmetric superconductors
• Low-energy magnetic response of the noncentrosymmetric heavy-fermion superconductor CePt3Si studied via inelastic neutron scattering
• Raman Spectra of Triplet Superconductor in Sr${}_2$RuO${}_4$

Cited by in corpus (8)

• Proximity effect with noncentrosymmetric superconductors
• Leggett modes and the Anderson-Higgs mechanism in superconductors without inversion symmetry
• Josephson Effect and Triplet--Singlet Ratio of Non--centrosymmetric Superconductors
• Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot
• Absence of spin-orbit-coupling-induced effects on lattice dynamics in CePt3Si
• Two-fluid description of two-band superconductors
• Dispersion and damping of zone-boundary magnons in the noncentrosymmetric superconductor CePt3Si
• Analysis of Magnetic Field-Angle Dependent Electronic Raman Scattering to Probe the Superconducting Gap