Neutron Scattering Study of the Spin Correlation in the Spin Ice System Ho_2Ti_2O_7

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概要

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• Intensity distribution of the neutron magnetic scattering has been taken in the reciprocal space of a single crystal of the "spin ice" system Ho_2Ti_2O_7 at the elastic energy position in the temperature (T) region between 0.4K and 50K. The short range magnetic correlation becomes appreciable with decreasing T at around 30K. The freezing of the moment system takes place at around 1.5K with decreasing T. Based on the mean field treatment of the moment system, the distribution of the observed intensity has been reproduced, where the dipolar interaction is confirmed to be primarily important for the determination of the magnetic correlation. Simple calculations of the scattering intensity carried out by using a cluster of 25 moments of Ho^<3+> ions indicate that there are many types of the moment arrangement within a cluster which have almost degenerated energies, indicating that the system cannot uniquely select the correlation pattern down to rather low temperature, and before going to the lowest energy state, the system undergoes the gradual slowing down to the glassy state.

• 社団法人日本物理学会の論文
• 2002-01-15

著者

• HARASHINA Hiroshi

  Department of Physics,Division of Material Science,Nagoya University

• SATO Masatoshi

  Department of Physics,Division of Material Science,Nagoya University

• KAKURAI Kazuhisa

  CREST,Japan Science and Technology Corporation (JST)

• KADOWAKI Hiroaki

  Department of Physics, Tokyo Metropolitan University

• 原科 浩

  教養部物理学教室

• Kato Masaya

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• ITO Masafumi

  Department of Pathology, Japanese Red Cross Nagoya Daiichi Hospital

• Ito Masafumi

  Department Of Physics Division Of Material Science Nagoya University

• Kato Masatune

  Department Of Physics Faculty Of Science Hiroshima University

• Masaki Kato

  Department Of Chemistry Graduate School Of Science Kyoto University

• Kanada Masaki

  Department Of Physics Division Of Material Science Nagoya University

• Kobayashi Hisao

  Department Of Physics Graduate School Of Science Tohoku University

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University

• Kondo Yasuyuki

  Department of Gastroenterology, Kanto Medical Center NTT EC

• Kondo Y

  Department Of Physics Division Of Material Science Nagoya University

• YASUI Yukio

  Department of Physics, Division of Material Science, Nagoya University

• IIKUBO Satoshi

  Department of Physics, Division of Material Science, Nagoya University

• OKUMURA Hajime

  Neutron Scattering Laboratory, ISSP, The University of Tokyo

• Kimata Motoi

  The Graduate School Of Science And Technology Kobe University

• IIKUBO Satoshi

  Quantum Beam Science Directorate, Japan Atomic Energy Agency

• Kato M

  Toyohashi Univ. Technol. Aichi Jpn

• Kodama Masafumi

  The Graduate School Of Science And Technology Kobe University

• Kadowaki H

  Tokyo Metroporitan Univ. Tokyo

• Kadowaki Hiroaki

  The Institute For Soild State Physics The University Of Tokyo

• Kadowaki Hiroaki

  Department Of Physics Tokyo Metroporitan University

• Iikubo S

  Quantum Beam Science Directorate Japan Atomic Energy Agency

• Iikubo Satoshi

  Department Of Physics Division Of Material Science Nagoya University

• Kamimura Hirohiko

  Department Of Materials Science Hiroshima University

• Kawanaka H

  National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn

• Okumura Hajime

  National Institute Of Advanced Industrial Science And Technology

• Okumura H

  National Institute Of Advanced Industrial Science And Technology Power Electronics Research Center

• Okumura H

  National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn

• Okumura H

  Neutron Scattering Laboratory Issp The University Of Tokyo

• Kato M

  Nagoya Univ. Nagoya Jpn

• Kato Mayumi

  Institute For Solid State Physics University Of Tokyo

• Kato Hideyuki

  Department Of Physics Faculty Of Science Hokkaido University

• Kadowaki Hiroaki

  The Institute For Solid State Physics The University Of Tokyo

• Kasai Mayumi

  Department Of Physics Division Of Material Science Nagoya University

• Kato M

  Institute For Solid State Physics University Of Tokyo

• YOSHIDA Yukihiro

  Research Institute, Meijo University

• Ito Masafumi

  Department Of Electrical And Electronic Engineering Faculty Of Science And Technology Meijo Universi

• Kadowaki Hiroaki

  Department Of Physics Graduate School Of Science Tokyo Metropolitan University

• Sato Masatoshi

  Department Of Electrical And Electronics Engineering Sophia University

• Kato Masaki

  Department Of Molecular Science And Technology Faculty Of Engineering Doshisha University

• Yoshida Yukihiro

  Research Institute Meijo University

• Sato Masatoshi

  Department Of Agro-environmental Science Obihiro University Of Agriculture And Veterinary Medicine

• Yasui Yukio

  Department Of Physics Division Of Material Science Nagoya University

• Kakuta Kazuyuki

  Department Of Physics Aoyama-gakuin University

• Ito Masafumi

  Department of Physics, Division of Material Science, Nagoya University

• Kondo Yasuyuki

  Department of Physics, Division of Material Science, Nagoya University

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