2001/11/07 by Claudio Grimaldi, C. Grimaldi
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.65.024507
published as Phys. Rev. B vol.65, 024507 (2002) · 7 pages, 1 eps figure. To appear on Phys. Rev. B (1 January 2001)
arxiv created 2001/11/07 · openalex publication_date 2001/12/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Nonmagnetic impurities affect the paramagnetic response of superconductors via the associated spin-orbit interaction that, when the nonmagnetic impurity is close to the unitary limit, must be treated beyond the classical Born approximation. Here the Zeeman response of two-dimensional s- and d-wave superconductors is calculated within the self-consistent T-matrix formulation for both impurity and spin-orbit scatterings. It is shown that at the unitary limit, for which the spin-orbit scattering is maximum, the spin-up and spin-down channels become decoupled implying full Zeeman splitting of the quasiparticle excitations. These results could be used to test the unitary scattering hypothesis in high-Tc superconductors.