Boron based new high entropy alloy superconductor Mo0.11W0.11V0.11Re0.34B0.33

Abstract

Superconducting high entropy alloys (HEAs) are new members of disordered superconductors. We report the synthesis and investigation of a new superconducting high entropy alloy Mo\(_{0.11}\)W\(_{0.11}\)V\(_{0.11}\)Re\(_{0.34}\)B\(_{0.33}\) (MWVRB). It crystallized in the tetragonal CuAl\(_2\) crystal structure with space group (I4/\(mcm\)). Comprehensive transport, magnetization and heat capacity measurements confirmed bulk type-II superconductivity having transition temperature T\(_{C}\) = 4.0 K. The low temperature electronic specific heat suggests a fully gapped superconducting state in weak coupling limit.