Commensurability in one-dimensional electron systems at quarter-filling

被引：2
|
作者：
Yoshioka, H
Tsuchiizu, M
Suzumura, Y
机构：
[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[2] Japan Sci & Technol Corp, CREST, Yokohama, Kanagawa, Japan
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 1-2期
关键词：
organic compounds; charge-density waves; electronic structure; spin-density waves;
D O I：
10.1016/S0022-3697(00)00179-7
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We examine the role of commensurability in electronic states and excitations for a one-dimensional interacting electron system at quarter-filling with on-site (U), nearest-neighbor (V-1) and next-nearest-neighbor (V-2) repulsive interactions, By applying the renormalization group method to the bosonized model, it is shown that the next-nearest-neighbor repulsion stabilizes 2k(F) density waves and induces the excitation gap in spin fluctuation for V-2 > U/2, (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码：419 / 422
页数：4
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