Itinerant-Localized Duality Picture of Spin Fluctuations in High-T_c Cuprates. I. Nested Spin-Fluctuation Theory
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概要
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The mode-mode coupling theory of spin fluctuations in the normal state of high-T_c cuprates is developed on the basis of the itinerant-localized duality picture of technically nested two-dimensional metals. This offers a unified description of the anomalies observed in the normal state of high-T_c cuprates. The so-called "spin-gap" behaviors of the resistivity, the specific heat, the uniform spin susceptibility, and the optical conductivity are characterized by the energy scale T of the crossover between the itinerant and the localized spin fluctuations, while those of the Hall coefficient, the thermo-electric power, the longitudinal NMR relaxation rate, and the neutron scattering intensity, are characterized by different energy scales less than T. The integrated weight of the nested spin fluctuation decreases when decreasing the temperature or approaching the perfect nesting, leading to the "spin-gap" behavior.
- 社団法人日本物理学会の論文
- 1994-10-15
著者
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Miyake Kazumasa
Department Of Internal Medicine Division Of Gastroenterology Nippon Medical School
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Narikiyo O
Department Of Physics Faculty Of Sciences Kyushu University
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Narikiyo Osamu
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Narikiyo Osamu
Division Of Materials Physics Department Of Physical Science Graduate School Of Engineering Science
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