Spin-orbital gapped phase with least symmetry breaking in the one-dimensional symmetrically coupled spin-orbital model
文献类型：期刊论文
| 作者 | Zhang, GM; Hu, H; Yu, L ; Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2003 |
| 卷号 | 67期号:6页码:- |
| 关键词 | Sigma-models Ground-state Systems Liquid Degeneracy Chain |
| ISSN号 | 1098-0121 |
| 英文摘要 | To describe the spin-orbital energy gap formation in the one-dimensional symmetrically coupled spin-orbital model, we propose a simple mean-field theory based on an SU(4) constraint fermion representation of spins and orbitals. A spin-orbital gapped phase is formed due to a marginally relevant spin-orbital valence bond pairing interaction. The energy gap of the spin and orbital excitations grows extremely slowly from the SU(4)-symmetric point up to a maximum value and then decreases rapidly. By calculating the spin, orbital, and spin-orbital tensor static susceptibilities at zero temperature, we find a crossover from coherent to incoherent magnetic excitations as the spin-orbital coupling decreases from large to small values. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000181501100048 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13364]  |
| 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 | Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, GM,Hu, H,Yu, L,et al. Spin-orbital gapped phase with least symmetry breaking in the one-dimensional symmetrically coupled spin-orbital model[J]. PHYSICAL REVIEW B,2003,67(6):-. |
| APA | Zhang, GM,Hu, H,Yu, L,&Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China..(2003).Spin-orbital gapped phase with least symmetry breaking in the one-dimensional symmetrically coupled spin-orbital model.PHYSICAL REVIEW B,67(6),-. |
| MLA | Zhang, GM,et al."Spin-orbital gapped phase with least symmetry breaking in the one-dimensional symmetrically coupled spin-orbital model".PHYSICAL REVIEW B 67.6(2003):-. |
入库方式： OAI收割
来源：理论物理研究所
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