Observation of Magnetic Monopoles in Spin Ice
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概要
- 論文の詳細を見る
Excitations from a strongly frustrated system, the kagomé ice state of the spin ice Dy2Ti2O7 under magnetic fields along a [111] direction, have been studied. They are theoretically proposed to be regarded as magnetic monopoles. Neutron scattering measurements of spin correlations show that close to the critical point the monopoles are fluctuating between high- and low-density states, supporting that the magnetic Coulomb force acts between them. Specific heat measurements show that monopole-pair creation obeys an Arrhenius law, indicating that the density of monopoles can be controlled by temperature and magnetic field.
- Physical Society of Japanの論文
- 2009-10-15
著者
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Aoki Yuji
Department Of Chemistry Faculty Of Science Gakushuin University
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Hiroi Zenji
Institute For Chemical Research Kyoto University
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TABATA Yoshikazu
Department of Earth and Space Science, Graduate School of Science, Osaka University
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Matsuhira Kazuyuki
Department Of Electronics Faculty Of Engineering Kyushu Institute Of Technology
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Kadowaki Hiroaki
Department Of Physics Graduate School Of Science Tokyo Metropolitan University
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Lynn Jeffrey
NCNR, National Institute of Standards and Technology, Gaithersburg, MD 20899-6102, U.S.A.
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Doi Naohiro
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397
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Sato Taku
NSL, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-1106
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Matsuhira Kazuyuki
Department of Electronics, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550
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Tabata Yoshikazu
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501
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Kadowaki Hiroaki
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397
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