Evidence for Temperature-Dependent Antiferromagnetic Correlation Length in High-T_c Cu Oxides
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概要
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We report the temperature(T)-dependent anisotropy r(≡^<63>W^<ab>/^<63>W^<cc>) of the planar ^<63>Cu nuclear spin-lattice relaxation rates ^<63>W^α (α=ab, cc) in the high-T_c Cu oxides, YBa_2Cu_4O_8, YBa_2Cu_3O_<6.96> and Tl_2Ba_2CuO_<6+δ>, from around T_c up to about 300 K. We discuss within the spin-fluctuation model that the anisotropy r is dependent only on the antiferromagnetic correlation length ζ and that its T-dependence for the lightly-doped material is different from that of the over-doped ones. We provide the T-dependent anisotropy r as direct evidence of the T-dependent ζ.
- 社団法人日本物理学会の論文
- 1995-08-15
著者
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Ueda Yutaka
Institute For Solid State Physics University Of Tokyo
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Itoh Y
Shizuoka Univ. Shizuoka
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Itoh Yutaka
Department Of Chemistry Graduate School Of Science Kyoto University
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Itoh Y
Superconductivity Research Laboratory International Superconductivity Technology Center
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Hayashi Akihiko
Institute for Solid State Physics, University of Tokyo
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Hayashi A
Institute For Solid State Physics University Of Tokyo
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Itoh Yuichi
Faculty Of Human Cultures Fukuyama University
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Ueda Yutaka
Institute For Solid State Physic The University Of Tokyo
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Itoh Yutaka
Department of Material Science, Faculty of Science, Kochi University
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