Spectroscopic signature of two superconducting gaps and their unusual field dependence in RuB${}_2$

Soumya Datta, Aastha Vasdev, Soumyadip Halder +3

Recently RuB${}_2$ was shown to be a possible two-gap, type-I superconductor. Temperature dependent heat capacity measurements revealed a two-gap superconducting ground state while m…