Temperature Dependence of the Magnetic Excitation Spectra of YBa_2Cu_<2.9>Zn_<0.1>O_<6.75>

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概要

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• Neutron scattering measurements of magnetic excitations in YBa_2Cu_<2.9>Zn_<0.1>O_<6.75> (T_c≤10K) have been performed. In contrast to the corresponding pure sample with the same oxygen number (T_c≃66K) where no peak of the antiferromagnetic correlation was detected for excitation energies below 15 meV, we have observed clear scattering contribution in the same energy range at all temperatures studied. A detailed study of X"(ω) at (π,π) in this Zn-substituted sample suggests 1) an existence of the gap-like structure at high temperatures (100K<T<200K) and 2) the enhancement of the spectral weight at low energies along with the loss of the itinerant nature of the electrons at low temperatures (T<50K).

• 社団法人日本物理学会の論文
• 1993-11-15

著者

• HARASHINA Hiroshi

  Department of Physics,Division of Material Science,Nagoya University

• SATO Masatoshi

  Department of Physics,Division of Material Science,Nagoya University

• SHAMOTO Shin-ichi

  Department of Applied Physics,Faculty of Engineering,Tohoku University

• KAKURAI Kazuhisa

  Institute for Solid State Physics,The University of Tokyo

• Shirane G.

  Physics Department, Brookhaven National Laboratory

• 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

• Shirane G

  Department Of Physics Brookhaven National Laboratory

• Shirane Gen

  Physics Department Brookhaven National Laboratory

• Kakurai Kazuhisa

  Institute For Solid State Physics University Of Tokyo

• Kageyama Taketomo

  Department Of Physics Nagoya University

• 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

• Shirane G.

  Department of physics, Brookhaven National Laboratory

• Kiyokura Takanori

  Department of Physics, Faculty of Science, Nagoya University

• Shirane Gen

  Brookhavcn National Laboratory Upion

• KIYOKURA Takanori

  NTT Basic Research Laboratories

• Sato Masatoshi

  Department Of Electrical And Electronics Engineering Sophia University

• Shirane G.

  Physics Department Brookhaven National Laboratory

• Sato Masatoshi

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

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