Intrinsic quantized anomalous Hall effect in a moiré heterostructure

• Published in: Science (American Association for the Advancement of Science) Vol. 367; no. 6480; pp. 900 - 903
• Main Authors: Serlin, M., Tschirhart, C. L., Polshyn, H., Zhang, Y., Zhu, J., Watanabe, K., Taniguchi, T., Balents, L., Young, A. F.
• Format: Journal Article
• Language: English
• Published: United States The American Association for the Advancement of Science 21.02.2020; American Association for the Advancement of Science (AAAS)
• Subjects: Boron; Conductance; Electromagnetism; Graphene; Hall effect; Heterostructures; Magnetic fields; Magnetism; Thin films; Topology

Quantum anomalous Hall effect—the appearance of quantized Hall conductance at zero magnetic field—has been observed in thin films of the topological insulator Bi 2 Se 3 doped with magnetic atoms. The doping, however, introduces inhomogeneity, reducing the temperature at which the effect occurs. Two...