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Correlation effects on the Fermi surface of the two-dimensional Hubbard model
http://hdl.handle.net/2241/100835
http://hdl.handle.net/2241/1008357196c9b9-42d7-41c1-b942-732c222ffca9
名前 / ファイル | ライセンス | アクション |
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Item type | Preprint(1) | |||||
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公開日 | 2008-10-31 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Correlation effects on the Fermi surface of the two-dimensional Hubbard model | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_1843 | |||||
タイプ | other | |||||
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 | |||||
著者 |
Otsuka, Y.
× Otsuka, Y.× Morita, Y.× 初貝, 安弘 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Effects of electron correlation on the Fermi surface (FS) is investigated for the two-dimensional Hubbard model by the quantum Monte Carlo method. At first, an infinitesimal doping from the half-filling is focused on and the momentum-dependent charge susceptibility κ(k)=dn(k)/dμ is calculated at a finite temperature. At the temperature Tnot, vert, similart2/U, it shows peak structure at (±π/2,±π/2) on the FS (line). It is consistent with the mean-field prediction of the d-wave pairing state or the staggered flux state. This momentum-dependent structure disappears at the high temperature T≈U. After summarizing the results of the half-filling case, we also discuss the effects of the doping on the momentum-dependent charge susceptibility. The anisotropic structure at half-filling fades out with sufficient doping. | |||||
言語 | en | |||||
書誌情報 |
en : The journal of physics and chemistry of solids 巻 63, 号 6-8, p. 1389-1391, 発行日 2002 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0022-3697 | |||||
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収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00704949 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/S0022-3697(02)00057-4 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | © 2002 Published by Elsevier Science Ltd. | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Elsevier |