Single thermodynamic transition at 2 K in superconducting UTe2 single crystals

Abstract

UTe2 is an unconventional superconductor with a putative multicomponent triplet order parameter, but the observation of two superconducting transitions remains controversial. Here, UTe2 single crystals exhibit reduced disorder and a single transition at 2 K, setting new constraints on the multicomponent superconductivity scenario.