Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect

Mogi, Masataka; Yoshimi, Ryutaro; Tsukazaki, Atsushi; Yasuda, Kenji; Kozuka, Yusuke; Takahashi, Kei; Kawasaki, M.; Tokura, Yoshinori

doi:10.1063/1.4935075

Public

Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect

Published in Applied Physics Letters • Nov 2, 2015

Authors:

Masataka Mogi

Ryutaro Yoshimi

Atsushi Tsukazaki

Abstract

Quantum anomalous Hall effect (QAHE), which generates dissipation-less edge current without external magnetic field, is observed in magnetic-ion doped topological insulators (TIs) such as Cr- and V-doped (Bi,Sb)2Te3. The QAHE emerges when the Fermi level is inside the magnetically induced gap around...

Subject

Topological insulator

Condensed matter physics

Quantum anomalous Hall effect

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