Systematic study of the two band/two gap superconductivity in carbon-substituted MgB2 by point-contact spectroscopy

Z. Holanova, P. Szabo, P. Samuely +3

Point-contact measurements on the carbon-substituted Mg(B${}_{1-x}$C${}_x$)${}_2$ filament/powder samples directly reveal a retention of the two superconducting energy gaps in the whole…