Elementary excitations in the spin-tube and spin-orbit models
文献类型：期刊论文
| 作者 | Wang, HT |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2001 |
| 卷号 | 64期号:17 |
| 关键词 | ANTIFERROMAGNETIC HEISENBERG LADDER GROUND-STATE PROPERTIES PHASE-DIAGRAM COMPOSITE SPIN FIELD-THEORY CHAIN SYSTEMS KAGOME MAGNETIZATION DEGENERACY |
| ISSN号 | 0163-1829 |
| 通讯作者 | Wang, HT: Max Planck Inst Phys Complexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany. |
| 中文摘要 | A bond operator representation for three S=1/2 spins is obtained along the same line as the two-spin cases. With the spin and the chirality freedom expressed by the same bond operators, we studied the elementary excitations of the spin-tube and the spin-orbit models. For 3-leg spin ladders and general spin ladders with an odd number of legs and periodic boundary conditions in the rung direction, the spinonlike excitations, which carry 1/2 spin and chirality freedoms, are calculated by a variational ansatz. The magnonlike excitations, which denote the change of a dimerized bond from spin singlet to spin triplet and/or from chirality triplet to chirality singlet, or from one kind of chirality triplet to another chirality triplet, with different z-component, are also studied. Bound states of spinonlike excitation pairs exist near the vicinity of momentum zone center pi /2. The bond operators are also applied to other general spin-orbit models with spontaneously dimerized ground states, and the elementary excitations are studied. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37274]  |
| 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 | Wang, HT. Elementary excitations in the spin-tube and spin-orbit models[J]. PHYSICAL REVIEW B,2001,64(17). |
| APA | Wang, HT.(2001).Elementary excitations in the spin-tube and spin-orbit models.PHYSICAL REVIEW B,64(17). |
| MLA | Wang, HT."Elementary excitations in the spin-tube and spin-orbit models".PHYSICAL REVIEW B 64.17(2001). |
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来源：物理研究所
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