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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Predominant magnetic states in the Hubbard model on anisotropic triangular lattices

http://hdl.handle.net/2237/11256
http://hdl.handle.net/2237/11256
6bafdde4-4afe-47d5-8749-f213ab485921
名前 / ファイル ライセンス アクション
PhysRevB_77_214505.pdf PhysRevB_77_214505.pdf (670.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2009-03-09
タイトル
タイトル Predominant magnetic states in the Hubbard model on anisotropic triangular lattices
言語 en
著者 Watanabe, T.

× Watanabe, T.

WEKO 27000

en Watanabe, T.

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Yokoyama, H.

× Yokoyama, H.

WEKO 27001

en Yokoyama, H.

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Tanaka, Y.

× Tanaka, Y.

WEKO 27002

en Tanaka, Y.

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Inoue, J.

× Inoue, J.

WEKO 27003

en Inoue, J.

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright: American Physical Society, All rights reserved.
キーワード
主題Scheme Other
主題 antiferromagnetic materials
キーワード
主題Scheme Other
主題 d-wave superconductivity
キーワード
主題Scheme Other
主題 Hubbard model
キーワード
主題Scheme Other
主題 magnetic domains
キーワード
主題Scheme Other
主題 metal-insulator transition
キーワード
主題Scheme Other
主題 Monte Carlo methods
キーワード
主題Scheme Other
主題 organic superconductors
キーワード
主題Scheme Other
主題 renormalisation
キーワード
主題Scheme Other
主題 superconducting energy gap
キーワード
主題Scheme Other
主題 superconducting transitions
キーワード
主題Scheme Other
主題 variational techniques
抄録
内容記述 By using an optimization variational Monte Carlo method, we study the half-filled-band Hubbard model on anisotropic triangular lattices, as a continuation of the preceding study [T. Watanabe, H. Yokoyama, Y. Tanaka, and J. Inoue, J. Phys. Soc. Jpn. 75, 074707 (2006)]. We introduce two new trial states: (i) A coexisting state of Ψ^co_Q -antiferromagnetic (AF) and a d-wave singlet gaps, in which we allow for a band renormalization effect, and (ii) a state with an AF order of 120° spin structure. In both states, a first-order metal-to-insulator transition occurs at smaller U/ t than that of the pure d-wave state. In insulating regimes, magnetic orders always exist; an ordinary (π,π)-AF order survives up to t'/t~0.9 (U/ t=12), and a 120°-AF order becomes dominant for t'/ t. The regimes of the robust superconductor and of the nonmagnetic insulator the preceding study proposed give way to these magnetic domains.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevB.77.214505
ISSN
収録物識別子タイプ PISSN
収録物識別子 1098-0121
書誌情報 en : PHYSICAL REVIEW B

巻 77, 号 21, p. 214505-214505, 発行日 2008-06
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/11256
識別子タイプ HDL
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