Temperature Dependence of the Sublattice Magnetization Measured by Cu NMR in Quasi-Two-Dimensional Antiferromagnet YBa_2Cu_3O_<6.1>
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概要
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The Cu-NMR spectrum for Cu(2) site was measured from 1.5 K to 200 K in the quasi-two dimensional (2D) bilayer antiferromagnet, YBa_2Cu_3O_<6.1>. The nuclear Zee-man and quadrupole frequencies, v_L and v_Q were deduced from the spectrum. The decrease of the sublattice magnetization with increasing temperature was evaluated from the values v_L as (v_L(0)-v_L(T))/v_L(0) assuming no temperature dependence of the hyperfine coupling constant. The evaluated sublattice magnetization shows the almost linear temperature dependence at least above 25 K in log ((v_L(0)-v_L(T))/v_L(0)) vs. log T plot. This temperature dependence of the sublattice magnetization is well explained quantitatively within a factor of two by the spin wave model in the quasi-2D antiferromagnet using the exchange coupling parameters reported previously by neutron scattering experiments.
- 社団法人日本物理学会の論文
- 1993-11-15
著者
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MATSUMURA Masahiro
Department of Physics, Kobe University
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Matsumura M
Faculty Of Science Kochi University
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Matsumura Masahiro
Department Of Material Science Faculty Of Science Kochi University
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Yamagata Hideki
Department of Physics, Faculty of Science, Kochi University
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IWAMOTO Yuji
Faculty of Maritime Sciences, Kobe University
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Nishiyama Seiya
Department of Physics, Faculty of Science, Kochi University
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Iwamoto Yuji
Department of Physics, Faculty of Science, Kochi University
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Iwamoto Y
Faculty Of Maritime Sciences Kobe University
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Matsumura M
Department Of Material Science Faculty Of Science Kochi University
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Nishiyama Seiya
Department Of Physics Faculty Of Science Kochi University
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Yamagata Hideki
Department Of Material Science Faculty Of Science Kochi University
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Yamagata Hideki
Faculty Of Science Kochi University
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Matsumura Masahiro
Department Of Physics Faculty Of Science Kouchi University
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Yamagata H
Department Of Material Science Faculty Of Science Kochi University
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Iwamoto Yuji
Department Of Environmental Materials And Engineering Nagoya Institute Of Technology
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IWAMOTO Yuji
Department of Environmental and Materials Engineering, Nagoya Institute of Technology
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