High-mobility two-dimensional electron gas in $\gamma$-Al${}_2$O${}_3$/SrTiO${}_3$ heterostructures

Xiang-Hong Chen, Zhi-Xin Hu, Kuang-Hong Gao +1

The origin of the two-dimensional electron gas (2DEG) in the interface between $\gamma$-Al${}_2$O${}_3$ (GAO) and SrTiO${}_3$ (STO) (GAO/STO) as well as the reason for the high mobility of th…