Zeeman effects on the impurity-induced resonances in d-wave superconductors

Abstract

It is shown how the resonant states induced by a single spinless impurity in a d-wave superconductor evolve under the effect of an applied Zeeman magnetic field. Moreover, it is demonstrated that the spin-orbit coupling to the impurity potential can have important and characteristic effects on the resonant states and their response to the Zeeman field, especially when the impurity is close to the unitary limit. For zero or very small spin-orbit interaction, the resonant states becomes Zeeman splitted by the magnetic field while when the spin-orbit coupling is important, new low-lying resonances arise which do not show any Zeeman splitting.

5 pages with 5 eps figures embedded. To appear on Phys. Rev. B

References in corpus (1)

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

Cited by in corpus (3)

• Kondo screening in d-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates
• Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors
• Temperature dependence of the impurity-induced resonant state in Zn-doped Bi_2Sr_2CaCu_2O${}_{8+\delta }$ by Scanning Tunneling Spectroscopy