Quantum confinement in perovskite oxide heterostructures: tight binding instead of nearly free electron picture

Zhicheng Zhong, Qinfang Zhang, Karsten Held

Most recently, orbital-selective quantum well states of $d$ electrons have been experimentally observed in SrVO${}_3$ ultrathin films [K. Yoshimatsu et. al., Science 333, 319 (2011)]…