Spin susceptibility of one-dimensional extended Hubbard model at quarter filling

Yasuhiro Tanaka, M. Ogata

研究成果: Article

抄録

The ground-state property of one-dimensional extended Hubbard model is investigated at quarter filling. By using spin-charge factorized wave function in the U → ∞ limit, the effective exchange coupling Jeff and spin susceptibility χ are calculated as a function of nearest-neighbor Coulomb interaction V. It is found that Jeff is suppressed by the effect of V through charge fluctuation. The results indicate these quantities have no singularities at the transition point because of the Berezinskii-Kosterlitz-Thouless-type transition of charge ordering. We also confirm the results by exact diagonalization method in the realistic parameter range. The relevance to the experiments on quasi one-dimensional organic conductor ( DI-DCNQI )2 Ag is discussed.

元の言語English
ページ(範囲)317-318
ページ数2
ジャーナルPhysica B: Condensed Matter
378-380
発行部数SPEC. ISS.
DOI
出版物ステータスPublished - 2006 5 1
外部発表Yes

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Hubbard model
Organic conductors
magnetic permeability
Exchange coupling
transition points
Wave functions
Coulomb interactions
Ground state
conductors
wave functions
ground state
Experiments
interactions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

Spin susceptibility of one-dimensional extended Hubbard model at quarter filling. / Tanaka, Yasuhiro; Ogata, M.

:: Physica B: Condensed Matter, 巻 378-380, 番号 SPEC. ISS., 01.05.2006, p. 317-318.

研究成果: Article

Tanaka, Yasuhiro ; Ogata, M. / Spin susceptibility of one-dimensional extended Hubbard model at quarter filling. :: Physica B: Condensed Matter. 2006 ; 巻 378-380, 番号 SPEC. ISS. pp. 317-318.
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