A gapless charge mode induced by the boundary states in the half-filled Hubbard open chain
文献类型：期刊论文
| 作者 | Deguchi, T; Yue, RH; Kusakabe, K |
| 刊名 | JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
 |
| 出版日期 | 1998-09-11 |
| 卷号 | 31页码:7315-7330 |
| ISSN号 | 0305-4470 |
| 英文摘要 | We discuss the ground state and some excited states of the half-filled Hubbard model defined on an open chain with L sites, where only one of the boundary sites has a different value of chemical potential. We consider the case when the boundary site has a negative chemical potential - p and the Hubbard coupling U is positive. By an analytic method we show that when p is larger than the transfer integral some of the ground-state solutions of the Bethe ansatz equations become complex-valued. It follows that there is a 'surface phase transition' at some critical value p(c); when p < p(c) all the charge excitations have the gap for the half-filled band, while there exists a massless charge mode when p > p(c). |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000076002000006 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.100.186/handle/113462/35362]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Deguchi, T |
| 作者单位 | 1.SUNY Stony Brook, Inst Theoret Phys, Stony Brook, NY 11794 USA 2.Ochanomizu Univ, Fac Sci, Dept Phys, Bunkyo Ku, Tokyo 1128610, Japan 3.Ochanomizu Univ, Grad Sch Humanities & Sci, Bunkyo Ku, Tokyo 1128610, Japan 4.NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China 5.Univ Tokyo, Inst Solid State Phys, Tokyo 1068666, Japan |
| 推荐引用方式 GB/T 7714 | Deguchi, T,Yue, RH,Kusakabe, K. A gapless charge mode induced by the boundary states in the half-filled Hubbard open chain[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,1998,31:7315-7330. |
| APA | Deguchi, T,Yue, RH,&Kusakabe, K.(1998).A gapless charge mode induced by the boundary states in the half-filled Hubbard open chain.JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,31,7315-7330. |
| MLA | Deguchi, T,et al."A gapless charge mode induced by the boundary states in the half-filled Hubbard open chain".JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 31(1998):7315-7330. |
入库方式： OAI收割
来源：近代物理研究所
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