Three-dimensional Fermi surface and small effective masses in Mo8Ga41

TL;DR

This paper investigates the Fermi surface of Mo8Ga41, revealing three-dimensional characteristics and small effective masses, which suggest isotropic superconductivity and potential for superconducting wire applications.

Contribution

It provides the first detailed quantum oscillation measurements of Mo8Ga41's Fermi surface, highlighting its three-dimensionality and small quasiparticle masses.

Findings

Four major quantum oscillation frequencies observed

Fermi surface sheets are three-dimensional

Small quasiparticle effective masses

Abstract

We report Fermi surface characteristics of Mo8Ga41, a two-gap superconductor with critical temperature Tc = 10 K, obtained from quantum oscillation measurements. Four major frequencies have been observed with relatively small quasiparticle masses. Angular dependence of major frequencies indicates three-dimensional Fermi surface sheets. This argues for a relatively isotropic superconducting state and, given its relatively high Tc, shows that a search for materials in this class could be of interest for superconducting wire applications.