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Gu, B; Lou, JZ; Qin, SJ; Xiang, T; Gu, B , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
Exciton excitations in a one-dimensional band insulator with Hubbard interactions
发表期刊CHINESE PHYSICS LETTERS
关键词Mott Insulator Polarization Transition
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.
2004
ISSN0256-307X
卷号21期号:3页码:530-533
学科领域Physics
收录类别SCI
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14115
专题理论物理所科研产出_SCI论文
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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