Unitary Limit of Spin-orbit scattering in two-dimensional s- and d-wave superconductors

Details Unitary Limit of Spin-orbit scattering in two-dimensional s- and d-wave superconductors Unitary Limit of Spin-orbit scattering in two-dimensional s- and d-wave superconductors

2001-11-07

arxiv.org/abs/cond-mat/0111109v1

Phys. Rev. B vol.65, 024507 (2002)

Physics

Condensed Matter

Superconductivity

7 pages, 1 eps figure. To appear on Phys. Rev. B (1 January 2001)

Scientific paper

10.1103/PhysRevB.65.024507

Non-magnetic impurities affect the paramagnetic response of superconductors via the associated spin-orbit interaction which, when the non-magnetic 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 becomes decoupled implying full Zeeman splitting of the quasiparticle excitations. These results could be used to test the unitary scattering hypothesis in high-Tc superconductors.

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