Excitation Spectra of Plane Site Cu Spins of Y_<0.52>Pr_<0.48>Ba_2Cu_3O_7 (T_c≃20 K)
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概要
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Neutron inelastic scattering measurements have been carried out on Y_<0.52>Pr_<0.48>Ba_2Cu_3O_7 with the superconducting transition temperature T_c≃ 20 K. From the spectral weight functionχ"(q, ω) of the Cu-spin excitations in the CuO_2 planes, the reduction of the hole-carrier concentration and the degree of the randomness induced by the substitution of Pr for Y are estimated. These results present evidences that the model of a hole-trapping by the hybridized states of the Pr4f and O2p_π orbitals proposed by Fehrenbacher and Rice [Phys. Rev. Lett. 70 (1993) 3471] provides an appropriate explanation of the experimental results associated with the well-known T_c-suppression of R_<1-x>Pr_xBa_2Cu_3O_7 (R=Y or various lanthanide elements) by the Pr-doping.
- 社団法人日本物理学会の論文
- 1994-12-15
著者
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NISHI Masakazu
Institute for Solid State Physics, University of Tokyo
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Nishi Masakazu
Neutron Scattering Laboratory Issp University Of Tokyo
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Nishi M
Neutron Scattering Laboratory Issp University Of Tokyo
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Nishi Masakazu
Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo
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Nishi Masakazu
Institute For Solid State Phrsics University Of Tokyo
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Nishi Masakazu
Issp University Of Tokyo
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KODAMA Katsuaki
Department of Physics,Division of Material Science,Nagoya University
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HARASHINA Hiroshi
Department of Physics,Division of Material Science,Nagoya University
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SATO Masatoshi
Department of Physics,Division of Material Science,Nagoya University
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SHAMOTO Shin-ichi
Department of Applied Physics,Faculty of Engineering,Tohoku University
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KAKURAI Kazuhisa
Institute for Solid State Physics,The University of Tokyo
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Nishi Masakazu
Neutron Scattering Laboratory Issp The University Of Tokyo
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原科 浩
教養部物理学教室
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Kodama Katsuaki
Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol
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Kodama Katsuaki
Department Of Physics Division Of Material Science Nagoya University
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Kakurai Kazuhisa
Institute For Solid State Physics University Of Tokyo
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Shamoto Shin-ichi
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Shamoto Shin-ichi
Institute For Molecular Science
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Shamoto Shin-ichi
Department Of Physics Division Of Material Science Nagoya University
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Sato Masatoshi
Department Of Electrical And Electronics Engineering Sophia University
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Sato Masatoshi
Department Of Agro-environmental Science Obihiro University Of Agriculture And Veterinary Medicine
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