Detailed Structure of the Magnetic Excitation Spectra of YBa_2Cu_3O_y and Its Implication on the Physical Characteristics of the Electron System

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概要

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• Detailed structure of the magnetic excitation spectra X"(q, ω) of the superconducting oxide YBa_2Cu_3O_<6.5> (the transition temperature T_c=52K) in the wave vector (q)- and the energy(ω)-space, and its temperature (T) dependence have been studied. By adopting an effective energy dispersion of the quasi particles which can reproduce the shape of the Fermi surface and by introducing the exchange interaction between the Cu spins, a rather satisfactory agreement between the calculation and the experimentally observed data can be obtained. In the study, it has been found that the effects of the quasi particle-energy broadening on the excitation spectra X"(q, ω) is important. The sharp resonance peak observed at ω∿40meV for the optimally doped system of YBa_2Cu_30_v can be naturally reproduced by the present model.

• 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)

• 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 Akito

  Department of Physics,Nagoya 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

• YASUI Yukio

  Department of Physics, Division of Material Science, Nagoya University

• IIKUBO Satoshi

  Department of Physics, Division of Material Science, Nagoya University

• 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

• Kobayashi A

  Institute For Advanced Research Nagoya University

• Kobayashi A

  Department Of Physics Division Of Material Science Nagoya University

• Kobayashi Akito

  Department Of Physics Nagoya University

• Kodama Masafumi

  The Graduate School Of Science And Technology Kobe University

• Iikubo S

  Quantum Beam Science Directorate Japan Atomic Energy Agency

• Iikubo Satoshi

  Department Of Physics Division Of Material Science Nagoya University

• Kato M

  Nagoya Univ. Nagoya Jpn

• Kato Mayumi

  Institute For Solid State Physics University Of Tokyo

• Kobayashi Akito

  Department Of Physics Division Of Material Science Nagoya University

• 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

• 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 Masahumi

  Department of Physics, Division of Material Science, Nagoya University

• Ito Masafumi

  Department of Physics, Division of Material Science, Nagoya University

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