Absence of localized $5d^1$ electrons in KTaO${}_3$ interface superconductors

Xinqiang Cai, Jungho Kim, Leonardo Martinelli +19

Recently, an exciting discovery of orientation-dependent superconductivity was made in two-dimensional electron gas (2DEG) at the interfaces of LaAlO${}_3$/KTaO${}_3$ (LAO/KTO) or EuO/…