Thickness Dependence of the Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films.
basic_science · Level V
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- Record sourced from PubMed, PMID 27166762.
- Also identified by DOI 10.1002/adma.201600919.
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Abstract
The evolution of the quantum anomalous Hall effect with the thickness of Cr-doped (Bi,Sb)2 Te3 magnetic topological insulator films is studied, revealing how the effect is caused by the interplay of the surface states, band-bending, and ferromagnetic exchange energy. Homogeneity in ferromagnetism is found to be the key to high-temperature quantum anomalous Hall material.