Evolution of Spin Gap in the Excitation Spectra of Quasi-Two-Dimensional S=1/2 System CaV_4O_9

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概要

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• Netrtron inelastic scattering sttmdies have been performed on the quasi-two-dimensional spin-gap system CaVj Og. An energy gap of about 10 rneV has been clearly observed in the magneticexcitation spectra at low temperatures. The Q-point of the minimum excitation energy may notcorrespond to the so-called (m, 7T), (7T, 0) or F-points in the reciprocal cell of the two-dimensionaltetragonal lattice. With decreasing temperature, the scattering intensity in the energy regionaround 12 meV begins to increase at abotmt TOO K, which almost coincides with the temperatureat which the susceptibility has a maximum value. This resvrlt may provide irnportant informationto trnderstand the "spin-gap anomaly" of high-'Z'. oxides.

• 社団法人日本物理学会の論文
• 1996-07-15

著者

• NISHI Masakazu

  Institute for Solid State Physics, University of Tokyo

• Nishi Masakazu

  Neutron Scattering Laboratory Issp University Of Tokyo

• Nishi M

  Neutron Scattering Laboratory Issp University Of Tokyo

• Nishi Masakazu

  Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo

• Nishi Masakazu

  Institute For Solid State Phrsics University Of Tokyo

• Nishi Masakazu

  Issp University Of Tokyo

• KODAMA Katsuaki

  Department of Physics,Division of Material Science,Nagoya University

• HARASHINA Hiroshi

  Department of Physics,Division of Material Science,Nagoya University

• SATO Masatoshi

  Department of Physics,Division of Material Science,Nagoya University

• SHAMOTO Shin-ichi

  Department of Applied Physics,Faculty of Engineering,Tohoku University

• KAKURAI Kazuhisa

  Institute for Solid State Physics,The University of Tokyo

• TANIGUCHI Satoshi

  Department of Physics,Faculty of Science,Nagoya University

• Nishi Masakazu

  Neutron Scattering Laboratory Issp The University Of Tokyo

• 原科 浩

  教養部物理学教室

• 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

• Kakurai Kazuhisa

  Institute For Solid State Physics University Of Tokyo

• Shamoto Shin-ichi

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Shamoto Shin-ichi

  Institute For Molecular Science

• Shamoto Shin-ichi

  Department Of Physics Division Of Material Science Nagoya University

• Taniguchi Satoshi

  General Education Muroran Institute of Technology

• Taniguchi Satoshi

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

• Sato Masatoshi

  Department Of Electrical And Electronics Engineering Sophia University

• Taniguchi S

  Department Of Applied Materials Science Muroran Institute Of Technology

• Taniguchi Satoshi

  Department Of Anesthesiology Kyoto Prefectural University Of Medicine

• Sato Masatoshi

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

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