Magnetic Excitations in the Spin Gap System KCuCl_3

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概要

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• Single-crystal neutron inelastic scattering was perfornaaed in order to investigate the naagneticexcitations of KCuCl3, which has a singlet grotmnd state with an excitation gap. The constant-(IJenergy scan profiles are collected at T : 8 K for selected reciprocal points in the a' -c" planewhich includes the double-chain direction (a-axis). Dispersion relations along the a"- and c"-axes are deternained. It is strggested that the present systena can be magnetically described as acoupled antiferrornagnetic dimer systern rather than a double spin chain. The lowest excitationenergy is deterzaained to be 2.70 rneV at Q : (0,0, -l) and (1,0,il), the value of which isconsistent xvith our previous evaluation of the excitation gap from the high-field raaagnetizationmeasurement.

• 社団法人日本物理学会の論文
• 1998-03-15

著者

• KAKURAI Kazuhisa

  Neutron Scattering Laboratory, Institute for Solid State Physics, The University of Tokyo

• TANAKA Hidekazu

  Department of Natural History Sciences, Faculty of Science, Hokkaido University

• NAKAJIMA Kenji

  Japan Atomic Energy Agency

• NAKAJIMA Kenji

  Neutron Scattering Laboratory,Institute for Solid State Physics,The University of Tokyo

• KATO Tetsuya

  Department of Physics,Faculty of Science,Tokyo Institute of Technology

• Kodama Katsuaki

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

• MORI Masahiro

  Department of Internal Medicine , Keio University

• Kato T

  Fukuoka Institute Of Technology

• SHIRAMURA Wakako

  Department of Physics,Sophia University

• TAKATSU Ken-ichi

  Department of Physics,Tohoku Institute for Technology

• Kakurai Kazuhisa

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

• Shiramura Wakako

  Department Of Physics Faculty Of Science And Technology Sophia University

• KATO Tetsuya

  Faculty of Education, Chiba University

• Nakajima K

  Japan Atomic Energy Agency

• Kato T

  Faculty Of Education Chiba University

• Nakajima K

  National Inst. Biosci. And Human‐technol. Ibaraki Jpn

• Tanaka Hidekazu

  Department Of Internal Medicine Iii Osaka Medical College

• Kato Tetsuya

  Department Of Information Science And Engineering Shibaura Institute Of Technology

• Nakajima Kenji

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

• Mori Masahiro

  Department Of Cancer Research Research Institute For Nuclear Medicine And Biology Hiroshima Universi

• Mori Masahiro

  Department Of Natural Science Informatics School Of Informatics And Sciences Nagoya University

• Tanaka Hidekazu

  Department Of Earth And Planetary Sciences Faculty Of Science Tokyo Institute Of Technology

• Tanaka Hidekazu

  Department Of Chemistry And Chemical Biology Gunma University

• Kakurai Kazuhisa

  Neutron Materials Research Center, Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

• Kato Tetsuya

  Department of Endocrinology and Metabolism, Dokkyo University School of Medicine

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