Search Results - "Yoshimi, Ryutaro"

Current-induced switching of proximity-induced ferromagnetic surface states in a topological insulator by Mogi, Masataka, Yasuda, Kenji, Fujimura, Reika, Yoshimi, Ryutaro, Ogawa, Naoki, Tsukazaki, Atsushi, Kawamura, Minoru, Takahashi, Kei S., Kawasaki, Masashi, Tokura, Yoshinori

“…Electrical manipulation of magnetization could be an essential function for energy-efficient spintronics technology. A magnetic topological insulator,…”
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Large non-reciprocal charge transport mediated by quantum anomalous Hall edge states by Yasuda, Kenji, Morimoto, Takahiro, Yoshimi, Ryutaro, Mogi, Masataka, Tsukazaki, Atsushi, Kawamura, Minoru, Takahashi, Kei S., Kawasaki, Masashi, Nagaosa, Naoto, Tokura, Yoshinori

“…The topological nature of the quantum anomalous Hall effect (QAHE) causes a dissipationless chiral edge current at the sample boundary 1 , 2 . Of fundamental…”
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Nonreciprocal charge transport at topological insulator/superconductor interface by Yasuda, Kenji, Yasuda, Hironori, Liang, Tian, Yoshimi, Ryutaro, Tsukazaki, Atsushi, Takahashi, Kei S., Nagaosa, Naoto, Kawasaki, Masashi, Tokura, Yoshinori

“…Topological superconductor is attracting growing interest for its potential application to topological quantum computation. The superconducting proximity…”
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Terahertz spectroscopy on Faraday and Kerr rotations in a quantum anomalous Hall state by Okada, Ken N., Takahashi, Youtarou, Mogi, Masataka, Yoshimi, Ryutaro, Tsukazaki, Atsushi, Takahashi, Kei S., Ogawa, Naoki, Kawasaki, Masashi, Tokura, Yoshinori

“…Electrodynamic responses from three-dimensional topological insulators are characterized by the universal magnetoelectric term constituent of the Lagrangian…”
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Current-induced magnetization switching at charge-transferred interface between topological insulator (Bi,Sb)2Te3 and van der Waals ferromagnet Fe3GeTe2 by Fujimura, Reika, Yoshimi, Ryutaro, Mogi, Masataka, Tsukazaki, Atsushi, Kawamura, Minoru, Takahashi, Kei S., Kawasaki, Masashi, Tokura, Yoshinori

“…Ferromagnetic two-dimensional van der Waals materials attract enormous interest as a platform to explore spin-related quantum phenomena, especially in…”
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Quantum anomalous Hall effect with a permanent magnet defines a quantum resistance standard by Okazaki, Yuma, Oe, Takehiko, Kawamura, Minoru, Yoshimi, Ryutaro, Nakamura, Shuji, Takada, Shintaro, Mogi, Masataka, Takahashi, Kei S., Tsukazaki, Atsushi, Kawasaki, Masashi, Tokura, Yoshinori, Kaneko, Nobu-Hisa

“…The quantum anomalous Hall effect (QAHE) 1 – 6 is a transport phenomenon where the Hall resistance is quantized to the von Klitzing constant due to the…”
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Photogalvanic spectroscopy on MnBi2Te4 topological insulator thin films by Takagi, Tsubasa, Watanabe, Ryota, Yoshimi, Ryutaro, Tsukazaki, Atsushi, Takahashi, Kei S., Kawasaki, Masashi, Tokura, Yoshinori, Ogawa, Naoki

“…We demonstrate zero-bias mid-infrared photocurrent generation in topological insulator MnBi2Te4 thin films. The symmetry breakings at the surface and…”
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Tailoring tricolor structure of magnetic topological insulator for robust axion insulator by Mogi, Masataka, Kawamura, Minoru, Tsukazaki, Atsushi, Yoshimi, Ryutaro, Takahashi, Kei S, Kawasaki, Masashi, Tokura, Yoshinori

“…Exploration of novel electromagnetic phenomena is a subject of great interest in topological quantum materials. One of the unprecedented effects to be…”
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Gate-electric-field and magnetic-field control of versatile topological phases in a semi-magnetic topological insulator by Watanabe, Ryota, Yoshimi, Ryutaro, Takahashi, Kei S., Tsukazaki, Atsushi, Kawasaki, Masashi, Kawamura, Minoru, Tokura, Yoshinori

“…Surface states of a topological insulator demonstrate interesting quantum phenomena, such as the quantum anomalous Hall (QAH) effect and the quantum…”
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Precise resistance measurement of quantum anomalous Hall effect in magnetic heterostructure film of topological insulator by Okazaki, Yuma, Oe, Takehiko, Kawamura, Minoru, Yoshimi, Ryutaro, Nakamura, Shuji, Takada, Shintaro, Mogi, Masataka, Takahashi, Kei S., Tsukazaki, Atsushi, Kawasaki, Masashi, Tokura, Yoshinori, Kaneko, Nobu-Hisa

“…The accuracy of Hall resistance in the quantum anomalous Hall effect has been studied at zero magnetic field using Crx(Bi,Sb) 2 − x Te3-based magnetic…”
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Laughlin charge pumping in a quantum anomalous Hall insulator by Kawamura, Minoru, Mogi, Masataka, Yoshimi, Ryutaro, Morimoto, Takahiro, Takahashi, Kei S., Tsukazaki, Atsushi, Nagaosa, Naoto, Kawasaki, Masashi, Tokura, Yoshinori

“…Adiabatic charge pumping is one of the most salient features of topological phases of matter 1 – 3 . Laughlin’s charge pumping in a quantum Hall system is the…”
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Enhancement of anomalous Hall effect in epitaxial thin films of intrinsic magnetic topological insulator MnBi2Te4 with Fermi-level tuning by Watanabe, Ryota, Yoshimi, Ryutaro, Kawamura, Minoru, Kaneko, Yoshio, Takahashi, Kei S., Tsukazaki, Atsushi, Kawasaki, Masashi, Tokura, Yoshinori

“…The recently discovered intrinsic magnetic topological insulator MnBi2Te4 has attracted keen interest for exotic quantum states such as a quantum anomalous…”
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Current-Driven Instability of the Quantum Anomalous Hall Effect in Ferromagnetic Topological Insulators by Kawamura, Minoru, Yoshimi, Ryutaro, Tsukazaki, Atsushi, Takahashi, Kei S, Kawasaki, Masashi, Tokura, Yoshinori

“…The instability of the quantum anomalous Hall (QAH) effect has been studied as a function of the electric current and temperature in ferromagnetic topological…”
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Nonreciprocal charge transport in topological superconductor candidate Bi2Te3/PdTe2 heterostructure by Masuko, Makoto, Kawamura, Minoru, Yoshimi, Ryutaro, Hirayama, Motoaki, Ikeda, Yuya, Watanabe, Ryota, He, James Jun, Maryenko, Denis, Tsukazaki, Atsushi, Takahashi, Kei S., Kawasaki, Masashi, Nagaosa, Naoto, Tokura, Yoshinori

“…In a hybrid system of topological insulator (TI)/superconductor (SC), the proximity-induced topological superconductivity is expected to appear at the…”
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Optical anomalous Hall effect enhanced by flat bands in ferromagnetic van der Waals semimetal by Kato, Yoshihiro D., Okamura, Yoshihiro, Minami, Susumu, Fujimura, Reika, Mogi, Masataka, Yoshimi, Ryutaro, Tsukazaki, Atsushi, Takahashi, Kei S., Kawasaki, Masashi, Arita, Ryotaro, Tokura, Yoshinori, Takahashi, Youtarou

“…Geometrical aspects of electronic states in condensed matter have led to the experimental realization of enhanced electromagnetic phenomena, as exemplified by…”
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Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators by Mogi, Masataka, Nakajima, Taro, Ukleev, Victor, Tsukazaki, Atsushi, Yoshimi, Ryutaro, Kawamura, Minoru, Takahashi, Kei S, Hanashima, Takayasu, Kakurai, Kazuhisa, Arima, Taka-Hisa, Kawasaki, Masashi, Tokura, Yoshinori

“…We report a proximity-driven large anomalous Hall effect in all-telluride heterostructures consisting of the ferromagnetic insulator Cr_{2}Ge_{2}Te_{6} and…”
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Gate-electric-field and magnetic-field control of versatile topological phases in a semi-magnetic topological insulator by Watanabe, Ryota, Yoshimi, Ryutaro, Takahashi, Kei S, Tsukazaki, Atsushi, Kawasaki, Masashi, Kawamura, Minoru, Tokura, Yoshinori

“…Surface states of a topological insulator demonstrate interesting quantum phenomena, such as the quantum anomalous Hall (QAH) effect and the quantum…”
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Molecular beam epitaxy of superconducting FeSe$_{x}$Te$_{1-x}$ thin films interfaced with magnetic topological insulators by Sato, Yuki, Nagahama, Soma, Belopolski, Ilya, Yoshimi, Ryutaro, Kawamura, Minoru, Tsukazaki, Atsushi, Kanazawa, Naoya, Takahashi, Kei S, Kawasaki, Masashi, Tokura, Yoshinori

“…Engineering heterostructures with various types of quantum materials can provide an intriguing playground for studying exotic physics induced by the proximity…”
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Nonreciprocal electrical transport in multiferroic semiconductor (Ge,Mn)Te by Yoshimi, Ryutaro, Kawamura, Minoru, Yasuda, Kenji, Tsukazaki, Atsushi, Takahashi, Kei S, Kawasaki, Masashi, Tokura, Yoshinori

“…We have investigated the nonreciprocal electrical transport, that is a nonlinear resistance effect depending on the current direction, in multiferroic Rashba…”
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This took us a Weyl: synthesis of a semimetallic Weyl ferromagnet with point Fermi surface by Belopolski, Ilya, Watanabe, Ryota, Sato, Yuki, Yoshimi, Ryutaro, Kawamura, Minoru, Nagahama, Soma, Zhao, Yilin, Shao, Sen, Jin, Yuanjun, Kato, Yoshihiro, Okamura, Yoshihiro, Zhang, Xiao-Xiao, Fujishiro, Yukako, Takahashi, Youtarou, Hirschberger, Max, Tsukazaki, Atsushi, Takahashi, Kei S, Chiu, Ching-Kai, Chang, Guoqing, Kawasaki, Masashi, Nagaosa, Naoto, Tokura, Yoshinori

“…Quantum materials governed by emergent topological fermions have become a cornerstone of physics. Dirac fermions in graphene form the basis for moir\'e quantum…”
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