684 citations · 1.2k across the 5 of their papers we have counts for
5 papers
Gate-electric-field and magnetic-field control of versatile topological phases in a semi-magnetic topological insulator
Ryota Watanabe, Ryutaro Yoshimi, Kei S. Takahashi +4
Surface states of a topological insulator demonstrate interesting quantum phenomena, such as the quantum anomalous Hall (QAH) effect and the quantum magnetoelectric effect. Fermi e…
Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator
K. Yasuda, A. Tsukazaki, R. Yoshimi +3
We report current-direction dependent or unidirectional magnetoresistance (UMR) in magnetic/nonmagnetic topological insulator (TI) heterostructures, Cr(BiSb)$_{2-x}…
Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry
N. Kanazawa, M. Kubota, A. Tsukazaki +6
We investigate the skyrmion formation process in nano-structured FeGe Hall-bar devices by measurements of topological Hall effect, which extracts the winding number of a spin textu…
Quantum Hall Effect on Top and Bottom Surface States of Topological Insulator (Bi1-xSbx)2Te3 Films
R. Yoshimi, A. Tsukazaki, Y. Kozuka +6
The three-dimensional (3D) topological insulator (TI) is a novel state of matter as characterized by two-dimensional (2D) metallic Dirac states on its surface. Bi-based chalcogenid…
Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
J. G. Checkelsky, R. Yoshimi, A. Tsukazaki +5
Topological insulators are bulk electronic insulators which possess symmetry protected gapless modes on their surfaces. Breaking the symmetries that underlie the gapless nature of…