Anomalous mass renormalization in two-dimensional electron systems on ultra-wide bandgap semiconductor $\beta$-Ga${}_2$O${}_3$

Ryu Yukawa, Hiroshi Mizuseki, Suryo Santoso Putro +27

Two-dimensional electron systems (2DESs) at wide-bandgap semiconductor surfaces and interfaces are fertile ground for emergent quantum phenomena. Here, we use micro-focused angle-r…