Fermi-surface-sheet dependent electron-phonon coupling in a borocarbide superconductor YNi${}_2$B${}_2$C

Taichi Terashima, Hiroyuki Takeya, Hisatomo Harima

We performed de Haas-van Alphen (dHvA) oscillation measurements and band-structure calculations for YNi${}_2$B${}_2$C. Our improved band structure successfully explained the origins of…