Three-dimensional Fermi surface and small effective masses in Mo8Ga41

Abstract

We report Fermi surface characteristics of Mo 8 Ga 41 , a two-gap superconductor with critical temperature T c ∼10 K, obtained from quantum oscillation measurements. Four major frequencies have been observed with relatively small quastiparticle 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 T c , shows that a search for materials in this class could be of interest for superconducting wire applications.

Superconductivity in the Endohedral Ga Cluster Compound PdGa5

“…Endohedral Ga cluster compounds constitute a family of superconductors that recently gained increased attention. − While crystal structures found in the TM x Ga y (TM, transition metal) compounds are diverse and rather complex, they can be conveniently described as networks of interconnected endohedral Ga clusters. Xie et al .…”