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Yasuhiro Tokura
Researcher at University of Tsukuba
Publications - 585
Citations - 29247
Yasuhiro Tokura is an academic researcher from University of Tsukuba. The author has contributed to research in topics: Quantum dot & Electron. The author has an hindex of 83, co-authored 579 publications receiving 27472 citations. Previous affiliations of Yasuhiro Tokura include Delft University of Technology & Tokyo University of Science.
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Journal ArticleDOI
Field-effect transistor on SrTiO3 with sputtered Al2O3 gate insulator
TL;DR: In this paper, a perovskite-type SrTiO3 single crystal is used as the semiconducting channel for an n-type accumulation mode field effect transistor.
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Field test of quantum key distribution in the Tokyo QKD Network
Masahide Sasaki,Mikio Fujiwara,H. Ishizuka,Werner Klaus,Kentaro Wakui,Masahiro Takeoka,Shigehito Miki,Taro Yamashita,Zhen Wang,Akihiro Tanaka,Ken-ichiro Yoshino,Yoshihiro Nambu,Shigeki Takahashi,Akio Tajima,Akihisa Tomita,T. Domeki,Tomonobu Hasegawa,Y. Sakai,H. Kobayashi,T. Asai,Katsuhiro Shimizu,T. Tokura,Toyohiro Tsurumaru,Mitsuru Matsui,Toshimori Honjo,Kiyoshi Tamaki,Hiroki Takesue,Yasuhiro Tokura,James F. Dynes,Alex Dixon,Andrew W. Sharpe,Zhiliang Yuan,Andrew J. Shields,S. Uchikoga,Matthieu Legre,S. Robyr,Patrick Trinkler,L. Monat,J.-B. Page,G. Ribordy,Andreas Poppe,A. Allacher,O. Maurhart,Thomas Länger,Momtchil Peev,Anton Zeilinger +45 more
TL;DR: Two GHz-clocked QKD links enable the world-first secure TV conferencing over a distance of 45km to be demonstrated and detection of an eavesdropper, rerouting into a secure path, and key relay via trusted nodes are demonstrated in this network.
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Magnetocapacitance effect in multiferroic BiMnO 3
TL;DR: In this article, the structural, magnetic, and electric properties of ferromagnetic perovskite structures were investigated and the changes in the dielectric constant were induced by the magnetic ordering.
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Optical spectra of La2-xSrxCuO4 : effect of carrier doping on the electronic structure of the CuO2 plane
TL;DR: The resulting spectrum in the high-{ital T}{sub {ital c}} regime is suggestive of a strongly itinerant character of the state in the moderately doped CuO{sub 2} plane while appreciable weight remains in the charge-transfer energy region.
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Magnetic-field-induced metal-insulator phenomena in Pr1-xCaxMnO3 with controlled charge-ordering instability
TL;DR: Field-induced insulator-to-metal transitions have been found in single crystals, which are accompanied by a melting of the insulating charge-ordered state, which is argued in terms of the effect of discommensuration of the charge concentration on the charge-ordering state.