Boundary defects in integrable quantum spin ladders
文献类型：期刊论文
| 作者 | Dai, JH ; Schlottmann, P ; Wang, YP |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2002 |
| 卷号 | 65期号:14 |
| 关键词 | T-J MODEL MAGNETIZATION PLATEAUS HEISENBERG LADDER PHASE-DIAGRAM ONE DIMENSION GAP CHAINS CU-2(C5H12N2)(2)CL-4 EXCITATIONS DYNAMICS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Dai, JH: Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. |
| 中文摘要 | We study boundary rung defects in n-leg quantum spin ladders with SU(2(n)) leg symmetry. The rung interactions are parametrized by two coupling parameters J and J(') interpolating between the uniform spin tube (J(')=J) and the open spin ladder (J(')=0). The rung defect at the edge of the ladder has rung coupling parameters J(d) and J(d)('). The conditions for the integrability of the model are investigated as a function of n, J, J('), J(d), and J(d)('), and the Bethe Ansatz equations for the exact solution are derived. The boundary quantum critical behavior is discussed. The conditions for the formation of a local moment (boundary bound state due to the defect) are studied. In the absence of a magnetic field such a bound state is only possible for even-legged spin tubes, while for odd-legged ladders a bound state can only occur in a large magnetic field. Depending on the parameters of the host this local moment may be screened in analogy to the Kondo effect. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34313]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Dai, JH,Schlottmann, P,Wang, YP. Boundary defects in integrable quantum spin ladders[J]. PHYSICAL REVIEW B,2002,65(14). |
| APA | Dai, JH,Schlottmann, P,&Wang, YP.(2002).Boundary defects in integrable quantum spin ladders.PHYSICAL REVIEW B,65(14). |
| MLA | Dai, JH,et al."Boundary defects in integrable quantum spin ladders".PHYSICAL REVIEW B 65.14(2002). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。