Exciton excitations in a one-dimensional band insulator with Hubbard interactions | |
Gu, B; Lou, JZ; Qin, SJ![]() ![]() | |
刊名 | CHINESE PHYSICS LETTERS
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2004 | |
卷号 | 21期号:3页码:530-533 |
关键词 | Mott Insulator Polarization Transition |
ISSN号 | 0256-307X |
英文摘要 | We study the properties of exciton excitations in the Hubbard model with alternating potential and dimerized hopping terms at half filling. With increasing Coulomb repulsive, we find that a spin triplet exciton band develops below the band gap. At certain critical interaction, the excitation gap of this exciton band vanishes and a new phase with a dimerized ground state emerges. The value of this critical Coulomb interaction is determined perturbatively. |
学科主题 | Physics |
URL标识 | 查看原文 |
WOS记录号 | WOS:000220202600032 |
公开日期 | 2012-08-30 |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/14115] ![]() |
专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
通讯作者 | Gu, B , Peking Univ, Dept Phys, Beijing 100871, Peoples R China. |
推荐引用方式 GB/T 7714 | Gu, B,Lou, JZ,Qin, SJ,et al. Exciton excitations in a one-dimensional band insulator with Hubbard interactions[J]. CHINESE PHYSICS LETTERS,2004,21(3):530-533. |
APA | Gu, B,Lou, JZ,Qin, SJ,Xiang, T,&Gu, B , Peking Univ, Dept Phys, Beijing 100871, Peoples R China..(2004).Exciton excitations in a one-dimensional band insulator with Hubbard interactions.CHINESE PHYSICS LETTERS,21(3),530-533. |
MLA | Gu, B,et al."Exciton excitations in a one-dimensional band insulator with Hubbard interactions".CHINESE PHYSICS LETTERS 21.3(2004):530-533. |
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