Zero temperature phase diagram of a d-wave superconductor with Anderson impurities

TL;DR

This paper investigates the zero-temperature phase diagram of a d-wave superconductor with Anderson impurities, analyzing how impurity interactions influence the superconducting phases using a large-N approximation.

Contribution

It provides a detailed analysis of the phase diagram considering impurity effects, which is a novel approach for understanding impurity-induced phenomena in d-wave superconductors.

Findings

Phase diagram depends on impurity concentration and energy scales

Impurities can suppress or modify superconducting phases

Large-N approximation effectively captures impurity interactions

Abstract

We study the model of a d-wave superconductor interacting with finite concentration of Anderson impurities at zero temperature. The interaction between impurity and conduction electrons is taken into account within the large-$N$ approximation. We discuss the obtained phase diagram and its dependence on the main energy scales.