Superconducting state in the metastable binary bismuthide Rh3Bi14 single crystals

TL;DR

This study characterizes the superconducting properties of metastable Rh3Bi14 single crystals, revealing its nearly isotropic, weak to intermediate BCS coupling nature with a Tc of 2.94 K, influenced by its crystal structure.

Contribution

It provides detailed magnetic, transport, and thermodynamic data on Rh3Bi14, highlighting the impact of atomic arrangement on its superconductivity.

Findings

Rh3Bi14 is a nearly isotropic superconductor

Superconducting transition temperature is 2.94 K

Electronic resistivity is dominated by phonon scattering

Abstract

We report detailed magnetic, transport and thermodynamic properties of metastable Rh3Bi14 single crystals in superconducting and normal state. We show that Rh3Bi14 is nearly isotropic, weak to intermediately coupled BCS superconductor, whereas the electronic resistivity above superconducting Tc = 2.94 K is dominated by the phonon scattering in the large unit cell with pores filled by Bi atoms. Superconductivity is strongly influenced by the nature of atoms that fill the voids in the crystal structure.