On the Correlation Effect in Peierls-Hubbard Chains

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概要

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• We reexamine the dimerization, the charge and the spin gaps of a half-filled Peierls-Hubbard chain by means of the incremental expansion technique combined with density matrix renormalization group (DMRG) method. We compare our numerical findings with results recently obtained by a bosonization and a renormalization group method and found out that this approach seems to be accurate in the weakly correlated case, only In the strongly correlated limit we found that the charge gap of the dimerized chain tends to the sum of the charge gap of the equidistant chain and the spin gap of the dimerized chain.

• 社団法人日本物理学会の論文
• 2003-09-15

著者

• Flach Sergej

  Max-planck-institut Fur Physik Komplexer Systeme

• Drechsler Stefan-ludwig

  Leibniz-institut Fur Festkorper- Und Werkstoffforschung

• Kladko Konstantin

  Ingrian Networks

• Malek Jiri

  Leibniz-institut Fur Festkorper- Und Werkstoffforschung

• JECKELMANN Eric

  Philipps-Universitat Marburg, Fachbereich Physik

• Jeckelmann Eric

  Philipps-universitat Marburg Fachbereich Physik

• Drechsler Stefan-Ludwid

  Leibniz-Institut fur Festkorper- und Werkstoffforschung

関連論文

• On the Correlation Effect in Peierls-Hubbard Chains
• On the Correlation Effect in Peierls-Hubbard Chains
• Discrete breathers in a nutshell

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