932 citations · 3.4k across the 11 of their papers we have counts for
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Interfacial ferroelectricity in rhombohedral-stacked bilayer transition metal dichalcogenides
Xirui Wang, Kenji Yasuda, Yang Zhang +6
Van der Waals (vdW) materials have greatly expanded our design space of heterostructures by allowing individual layers to be stacked at non-equilibrium configurations, for example…
Experimental signature of parity anomaly in semi-magnetic topological insulator
M. Mogi, Y. Okamura, M. Kawamura +9
A three-dimensional topological insulator features a two-dimensional surface state consisting of a single linearly-dispersive Dirac cone. Under broken time-reversal symmetry, the s…
Stacking-engineered ferroelectricity in bilayer boron nitride
Kenji Yasuda, Xirui Wang, Kenji Watanabe +2
2D ferroelectrics with robust polarization down to atomic thicknesses provide novel building blocks for functional heterostructures. Experimental reports, however, remain scarce be…
Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator
K. Yasuda, M. Mogi, R. Yoshimi +5
The electronic orders in magnetic and dielectric materials form the domains with different signs of order parameters. The control of configuration and motion of the domain walls (D…
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…