Stripe Orders in the Extended Hubbard Model : Condensed Matter: Electronic Properties, etc.
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概要
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We study stripe orders of charge and spin density waves in the extended Hubbard model with the nearest-neighbor Coulomb repulsion V within the mean field approximation. We obtain V vs. T (temperature) phase diagram for the on-site Coulomb interaction U/t = 8.0 and the filling n = 0.8, where t is a nearest-neighbor transfer energy. Our result shows that the diagonal stripe spin density wave state (SDW) is stable for small V, but for large V the most stable state changes to a charge density wave-antiferromagnetic (CDW-AF) state. Especially we find at low temperature and for a certain range of value of V, a vertical stripe CDW-AF state becomes stable.
- 社団法人日本物理学会の論文
- 2000-12-15
著者
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Kato Masaru
Department Of Analytical Chemistry School Of Pharmaceutical Sciences University Of Shizuoka
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Kato Taira
Department Of Mathematical Sciences Osaka Prefecture University
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