Bosonization Approachi to the One-Dimensional Kondo Lattice Model at Half Filling:Reexamination
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概要
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Low-energy properties of the one-dimensional Kondo lattice model are investigated by usingbosonization and renortnalization grotrp methods. The forunation of' the spin and charge ex-citation gaps at half-filling is discussed in detail both for ?tntiferrornagnetic and f'errounagneticKondo cottplings. Also, the effect of' the interaction between conduction electrons on the gapfortnation is sttndied both f'or the Kondo instrlating phase and for the HaJdane gap phase. It isfound that while the reptrlsive interaction changes the dependence of' the excitation gap on theKondo exchange coupling, the attractive interaction can drive the Kondo (or Haldane) instulatingphase to a cotnpletely di[1'erent phase of massless naetallic states.
- 社団法人日本物理学会の論文
- 1997-07-15
著者
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Kawakami Norio
Department Of Applied Physics Osaka University
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Fujimoto Satoshi
Department Of Physics Kyoto University
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Fujimoto Satoshi
Department Of Hygiene And Microbiology Faculty Of Veterinary Medicine Hokkaido University
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FUJIMOTO Satoshi
Department of Physics,Kyoto University
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