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  1. 050 理学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Critical behavior near the metal-insulator transition in the one-dimensional extended Hubbard model at quarter filling

http://hdl.handle.net/10191/1151
http://hdl.handle.net/10191/1151
10991411-faa0-454f-9bc8-33ccc2ef330f
名前 / ファイル ライセンス アクション
19_0006.pdf 19_0006.pdf (276.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-04-23
タイトル
タイトル Critical behavior near the metal-insulator transition in the one-dimensional extended Hubbard model at quarter filling
タイトル
言語 en
タイトル Critical behavior near the metal-insulator transition in the one-dimensional extended Hubbard model at quarter filling
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Sano, Kazuhiro

× Sano, Kazuhiro

WEKO 7684

Sano, Kazuhiro

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Ono, Yoshiaki

× Ono, Yoshiaki

WEKO 62

Ono, Yoshiaki

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著者別名
識別子 62
識別子Scheme WEKO
姓名 大野, 義章
抄録
内容記述タイプ Abstract
内容記述 We examine the critical behavior near the metal-insulator transition (MIT) in the one-dimensional extended Hubbard model with the on-site and the nearest-neighbor interactions U and V at quarter filling using a combined method of the numerical diagonalization and the renormalization group (RG). The Luttinger-liquid parameter Kρ is calculated with the exact diagonalization for finite size systems and is substituted into the RG equation as an initial condition to obtain Kρ in the infinite size system. This approach also yields the charge gap Δ in the insulating state near the MIT. The results agree very well with the available exact results for U=∞ even in the critical regime of the MIT where the characteristic energy becomes exponentially small and the usual finite size scaling is not applicable. When the system approaches the MIT critical point V→Vc for a fixed U, Kρ and Δ behave as [numerical formula] and [numerical formula], where the critical value Vc and the coefficients cΔ and cK are functions of U. These critical properties, which are known to be exact for U=∞, are observed also for finite U case. We also observe the same critical behavior in the limit of the MIT critical point U→Uc when U is varied for a fixed V.
書誌情報 Physical Review B
en : Physical Review B

巻 70, 号 15, p. 155102-1-155102-7, 発行日 2004
出版者
出版者 American Physical Society
ISSN
収録物識別子タイプ ISSN
収録物識別子 10980121
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA11187113
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1103/PhysRevB.70.155102
権利
権利情報 The American Physical Society
著者版フラグ
値 author
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