Local density of states induced by anisotropic impurity scattering in a d-wave superconductor

TL;DR

This paper investigates how anisotropic impurity scattering affects the local density of states in a d-wave superconductor, revealing significant alterations in quasiparticle behavior near impurities.

Contribution

It introduces a model considering momentum-dependent impurity potential to analyze local density of states in d-wave superconductors, highlighting the impact of anisotropic scattering.

Findings

Anisotropic impurity potential significantly changes the spatial distribution of quasiparticle density.

The impurity scattering anisotropy can lead to notable modifications in local density of states.

The study provides insights into impurity effects relevant for understanding superconductor properties.

Abstract

We study a single impurity effect on the local density of states in a d-wave superconductor accounting for the momentum-dependent impurity potential. We show that the anisotropy of the scattering potential can alter significantly the spatial dependence of the quasiparticle density of states in the vicinity of the impurity.