The proximity coupling of topological insulators with magnetic materials can give rise to exotic phenomenon such as the quantum anomalous Hall effect. Here, the authors use magneto-optical Landau level spectroscopy to investigate Pb1-xSnxSe-EuSe heterostructures finding evidence of a quantum confinement induced energy gaps in the topological surface states, that overshadow the magnetic proximity effects.
- Jiashu Wang
- Tianyi Wang
- Badih A. Assaf
