Superconductivity in Single-Crystal YIn3

TL;DR

This study investigates the superconducting properties of high-quality single-crystal YIn3 using resistivity, susceptibility, and specific heat measurements, revealing a region of filamentary superconductivity and its implications.

Contribution

It provides the first detailed comparison of superconducting transition measurements in YIn3, highlighting the presence of filamentary superconductivity.

Findings

Superconducting transitions differ across measurement techniques.

Filamentary superconductivity may be present in YIn3.

Implications for unconventional superconductors discussed.

Abstract

We measure the superconducting transition of YIn$_3$ by resistivity, susceptibility, and specific heat. Despite using high-quality single-crystal samples, the transitions detected by the three techniques are shifted from each other in temperature, suggesting a region of filamentary superconductivity. We discuss the possible implications for filamentary superconductivity in unconventional superconductors.