Effect of anisotropic impurity scattering on a density of states of a d-wave superconductor

TL;DR

This paper investigates how anisotropic impurity scattering influences the density of states and critical temperature in d-wave superconductors, considering various scattering regimes and impurity concentrations.

Contribution

It introduces a detailed analysis of anisotropic impurity effects on superconducting properties, extending understanding beyond isotropic models.

Findings

Anisotropic impurities significantly alter the local and quasiparticle density of states.

Impurity scattering impacts the critical temperature depending on scattering anisotropy.

Different scattering regimes produce distinct modifications in superconducting characteristics.

Abstract

We discuss the effect of an anisotropic impurity potential on the critical temperature, local density of states in the vicinity of a single impurity, and the quasiparticle density of states for a finite impurity concentration in a d-wave superconductor. Different scattering regimes are concerned.