Effects of inter-site repulsion in the one-dimensional dimerized Hubbard model at quarter-filling

被引：1

作者：

Nishimoto, S

Yamaguchi, T

Shibata, Y

Ohta, Y ^{[1
]}

机构：

[1] Chiba Univ, Dept Phys, Inage Ku, Chiba 2638522, Japan

[2] Chiba Univ, Venture Business Lab, Inage Ku, Chiba 2638522, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 1-2期

关键词：

organic compounds; superconductors; electronic structure; phase transition; superconductivity;

D O I：

10.1016/S0022-3697(00)00148-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To study the metal-insulator (MI) transition of Bechgaad salts, we investigate the one-dimensional (1D) dimerized Hubbard model with the nearest-neighbor Coulomb repulsions at quarter-filling. Density-matrix renormalization group (DMRG) technique is used to obtain the charge gap of this model. Thus. we examine the effect of the nearest-neighbor repulsion on the charge gap. We also investigate the simplified model of quasi-1D organic systems, using the weak-coupling theory and mean-field approximation, and then propose a possible idea for the MI transition. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：289 / 292

页数：4

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[1] CHARGE GAP IN THE ONE-DIMENSIONAL DIMERIZED HUBBARD-MODEL AT QUARTER-FILLING
PENC, K
MILA, F
[J]. PHYSICAL REVIEW B, 1994, 50 (16): : 11429 - 11445
[2] Optical conductivity of the one-dimensional dimerized Hubbard model at quarter filling
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[J]. The European Physical Journal B - Condensed Matter and Complex Systems, 2005, 44 : 287 - 297
[3] Optical conductivity of the one-dimensional dimerized Hubbard model at quarter filling
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[4] PHASE-DIAGRAM OF THE ONE-DIMENSIONAL EXTENDED HUBBARD-MODEL AT QUARTER-FILLING
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[5] Commensurate-incommensurate transition in a one-dimensional dimerized electron system close to quarter-filling
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Tsuchiizu, M
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[6] Crossover from quarter-filling to half-filling in a one-dimensional electron system with a dimerized and quarter-filled band
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