Carbon-substitution dependent multiple superconducting gap of MgB${}_2$: a "sub-meV" resolution photoemission study

S. Tsuda, T. Yokoya, T. Kiss +10

``Sub-meV'' resolution photoemission spectroscopy was used to study carbon-substitution dependence on the multiple superconducting gap of Mg(B${}_{1-x}$C${}_x{)}_2$. Two features c…