Nonlinear magneto-optical response of s- and d-wave superconductors

Article

关键词: 2ND HARMONIC-GENERATION;    HEAVY-FERMION SUPERCONDUCTORS;    TEMPERATURE-DEPENDENCE;    SURFACE MAGNETOOPTICS;    FERROMAGNETIC NICKEL;    UPT3;    ANISOTROPY;    PROXIMITY;    LATTICE;    STATE;   

DOI  :  10.1103/PhysRevB.53.11860

来源: SCIE

【 摘 要 】

The nonlinear magneto-optical response of s- and d-wave superconductors is discussed. We carry out the symmetry analysis of the nonlinear magneto-optical susceptibility in the superconducting state. Due to the surface sensitivity of the nonlinear optical response for systems with bulk inversion symmetry, we perform a group-theoretical classification of the superconducting order parameter close to a surface. The mixing of singlet and triplet pairing states induced by spin-orbit coupling is systematically taken into account. We show that the interference of singlet and triplet pairing states leads to an observable contribution of the nonlinear magnetooptical Kerr effect. This effect is not only sensitive to the anisotropy of the gap function but also to the symmetry itself. In view of the current discussion of the order-parameter symmetry of high-T-c superconductors, results for a tetragonal system with bulk singlet pairing for various pairing symmetries are discussed.

【 授权许可】

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