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Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect
M. Mogi, R. Yoshimi, A. Tsukazaki +5
Quantum anomalous Hall effect (QAHE), which generates dissipation-less edge current without external magnetic field, is observed in magnetic-ion doped topological insulators (TIs),…
Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators
Takahiro Mikami, Sota Kitamura, Kenji Yasuda +3
We construct a systematic high-frequency expansion for periodically driven quantum systems based on the Brillouin-Wigner (BW) perturbation theory, which generates an effective Hami…
Quantum Hall States Stabilized in Semi-magnetic Bilayers of Topological Insulators
R. Yoshimi, K. Yasuda, A. Tsukazaki +4
By breaking the time-reversal-symmetry in three-dimensional topological insulators with introduction of spontaneous magnetization or application of magnetic field, the surface stat…