Spectroscopic evidence for two-gap superconductivity in the quasi-one dimensional chalcogenide Nb${}_2$Pd${}_{0.81}$S${}_5$

Eunsung Park, Xin Lu, Filip Ronning +4

We present the first direct evidence for two-band superconductivity in the quasi-one dimensional chalcogenide Nb${}_2$Pd${}_{0.81}$S${}_5$. Soft point contact spectroscopic measureme…