Field-induced midgap edge excitations in quantum spin chains
文献类型：期刊论文
| 作者 | Wang, XQ; Lou, JZ; Chen, CF; Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2006 |
| 卷号 | 73期号:9页码:- |
| 关键词 | Dimensional S=1/2 Antiferromagnet Copper Benzoate Magnetic-field Weak Ferromagnetism Linear-chain Induced Gap Yb4as3 |
| ISSN号 | 1098-0121 |
| 英文摘要 | A recent study [J. Lou, , Phys. Rev. Lett. 94, 217207 (2005)] reveals that topological edge effects induce bound midgap states in antiferromagnetic Heisenberg chains with a staggered magnetic field. We report density matrix renormalization group calculations that examine the effects of high magnetic field on the gap and midgap states and the range of validity of the field theory prediction on their scaling behavior. We also investigate the effects of the site parity (i.e., even or odd number of sites in the chain), the dilution of the spin chain by dopant atoms, and the uniform magnetic field on the emergence and evolution of the midgap states. The results provide useful insights into the behavior of the edge excitations in spin chain materials, which should facilitate the comparison between theory and experiment and stimulate further investigations. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000236467100017 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/6035]  |
| 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 , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA |
| 推荐引用方式 GB/T 7714 | Wang, XQ,Lou, JZ,Chen, CF,et al. Field-induced midgap edge excitations in quantum spin chains[J]. PHYSICAL REVIEW B,2006,73(9):-. |
| APA | Wang, XQ,Lou, JZ,Chen, CF,&Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA.(2006).Field-induced midgap edge excitations in quantum spin chains.PHYSICAL REVIEW B,73(9),-. |
| MLA | Wang, XQ,et al."Field-induced midgap edge excitations in quantum spin chains".PHYSICAL REVIEW B 73.9(2006):-. |
入库方式： OAI收割
来源：理论物理研究所
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