Renormalized Perturbation Approach for Examination of Itinerant-Localized Duality Model for Strongly Correlated Electron Systems
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概要
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NVe present a rnicroscopic exarttinartion for tlae itinerant-localized dtrality model which hasbeen proposed to uzaderstaxnd anonaalotts properties of strongly correlated systerns like the lneavyferuaaions by Ktrranaoto and 1VIiyttke, and also tmseful to describe the anomalotrs properties of' tlaehigh-T. cupttrates. The action of the dvrality xnodel consists of' two components of dynatnicaldegrees of' freedom. One of them is coherent itinerant degree of' f'ernaion ?tnd the other is inco-herent localized one describing mainly the spin wlaich has not been explicitly considered so far.We show that the thermodynamic potential of the strongly interacting Hublcard rnode[ can Everearranged in the forum of dttality naodel on the basis of' renormalized perttnrbation expansion ofthe Luttinger-Ward ftrnctional if' the one-particle spectral weight exhibits triple peak strvrcture.We also exarnine the incoherent degrees of freedorn described as a "localized spin" and showon the basis of the pertttbation expansion that there exists comrnensttrate stnperexchange-typeinteraction arnorag the "localized spins".
- 社団法人日本物理学会の論文
- 1997-08-15
著者
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Miyake Kazumasa
Department Of Internal Medicine Division Of Gastroenterology Nippon Medical School
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Okuno Y
Kyoto Univ. Kyoto
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Okuno Yukihiro
Department Of Physics Faculy Of Science Kyoto University:department Of Physical Science Graduate Sch
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Narikiyo Osamu
Department of Material Physics,Faculty of Engineering Science,Osaka University
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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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