Phase coherent transport in hybrid superconducting structures: the case of d-wave superconductors

TL;DR

This paper investigates how d-wave superconducting symmetry influences zero bias anomalies and phase-dependent conductance in hybrid structures, revealing suppression of anomalies and dependence on island alignment.

Contribution

It provides new insights into the effects of d-wave pairing symmetry on transport phenomena in superconducting hybrid structures.

Findings

Zero-bias anomalies are suppressed with d-wave symmetry.

Phase-periodic conductance is unaffected by pairing type in aligned islands.

Zero-phase extremum behavior reverses in non-aligned islands.

Abstract

We examine the effect of d-wave symmetry on zero bias anomalies in normal-superconducting tunnel junctions and phase-periodic conductances in Andreev interferometers. In the presence of d-wave pairing, zero-bias anomalies are suppressed compared with the s-wave case. For Andreev interferometers with aligned islands, the phase-periodic conductance is insensistive to the nature of the pairing, whereas for non-aligned islands, the nature of the zero-phase extremum is reversed.