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Changping Yang
Department of Physics, Tokyo Metropolitan University Department of Physics, Tohoku University
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Masahumi Kohgi
Department of Physics, Tokyo Metropolitan University
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Kazuaki Iwasa
Department of Physics, Tohoku University
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Hitoshi Sugawara
Faculty of Integrated Arts snd Sciences, The University of Tokushima
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Hideyuki Sato
Department of Physics, Tokyo Metropolitan University