Microscopic origin of the mobility enhancement at a spinel/perovskite oxide heterointerface revealed by photoemission spectroscopy

P. Schütz, D. V. Christensen, V. Borisov +15

The spinel/perovskite heterointerface $\gamma$-Al${}_2$O${}_3$/SrTiO${}_3$ hosts a two-dimensional electron system (2DES) with electron mobilities exceeding those in its all-perovskite counte…