Hybridization gap formation in the Kondo insulator YbB${}_{12}$ observed using time-resolved photoemission spectroscopy

M. Okawa, Y. Ishida, M. Takahashi +5

A detailed low-energy electronic structure of a Kondo insulator YbB${}_{12}$ was revealed by a synergetic combination of ultrahigh-resolution laser photoemission spectroscopy (PES) a…