Topological effects in short antiferromagnetic Heisenberg chains
文献类型：期刊论文
| 作者 | Lou, JZ; Qin, SJ ; Ng, TK; Su, ZB; Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
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| 出版日期 | 2002 |
| 卷号 | 65期号:10页码:- |
| 关键词 | Quantum Spin Chains Renormalization-groups Sigma-model Edge States Symmetry Energy |
| ISSN号 | 1098-0121 |
| 英文摘要 | The manifestations of topological effects in finite antiferromagnetic Heisenberg chains are examined by density-matrix renormalization-group techniques. We find that the difference between integer and half-integer spin chains shows up in ground-state energy per site when the length of the spin chain is longer than similar toxi, where xisimilar toexp(piS) is a spin-spin correlation length, for spin magnitudes S up to 5/2. For open chains with spin magnitudes S=5/2 to S=5, we verify that end states with fractional spin quantum numbers S' exist and are visible in the structure of the low-energy excitation spectrum even when the chain length is much smaller than the correlation length xi. The robustness of end states points to the possibility of the existence of general hidden topological order in quantum spin chains with spin magnitudes Sgreater than or equal to1. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000174548300055 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13584]  |
| 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 | Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lou, JZ,Qin, SJ,Ng, TK,et al. Topological effects in short antiferromagnetic Heisenberg chains[J]. PHYSICAL REVIEW B,2002,65(10):-. |
| APA | Lou, JZ,Qin, SJ,Ng, TK,Su, ZB,&Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Topological effects in short antiferromagnetic Heisenberg chains.PHYSICAL REVIEW B,65(10),-. |
| MLA | Lou, JZ,et al."Topological effects in short antiferromagnetic Heisenberg chains".PHYSICAL REVIEW B 65.10(2002):-. |
入库方式： OAI收割
来源：理论物理研究所
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