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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

First- and Second Order Phase Transitions in the Holstein-Hubbard Mode

http://hdl.handle.net/10191/26872
http://hdl.handle.net/10191/26872
9a0ba14a-4b98-421b-bcb7-a67752b3ea55
名前 / ファイル ライセンス アクション
1014.pdf 1014.pdf (102.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-04-16
タイトル
タイトル First- and Second Order Phase Transitions in the Holstein-Hubbard Mode
タイトル
言語 en
タイトル First- and Second Order Phase Transitions in the Holstein-Hubbard Mode
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Koller, W.

× Koller, W.

WEKO 4787

Koller, W.

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Meyer, D.

× Meyer, D.

WEKO 4788

Meyer, D.

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Ono, Y.

× Ono, Y.

WEKO 62

Ono, Y.

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Hewson, A. C.

× Hewson, A. C.

WEKO 4790

Hewson, A. C.

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抄録
内容記述タイプ Abstract
内容記述 We investigate metal-insulator transitions in the half-filled Holstein-Hubbard model as a function of the on-site electron-electron interaction U and the electron-phonon coupling g. We use several different numerical methods to calculate the phase diagram, the results of which are in excellent agreement. When the electron-electron interaction U is dominant the transition is to a Mott-insulator; when the electron-phonon interaction dominates, the transition is to a localised bipolaronic state. In the former case, the transition is always found to be second order. This is in contrast to the transition to the bipolaronic state, which is clearly first order for larger values of U. We also present results for the quasiparticle weight and the double-occupancy as function of U and g.
書誌情報 Europhysics Letters
en : Europhysics Letters

巻 66, 号 4, p. 559-564, 発行日 2004-05
出版者
出版者 IOP Publishing
ISSN
収録物識別子タイプ ISSN
収録物識別子 02955075
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10668127
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1209/epl/i2003-10228-6
著者版フラグ
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