Bond operator theory of isotropic spin-1 antiferromagnetic chains
文献类型：期刊论文
| 作者 | Wang, HT ; Shen, JL ; Su, ZB |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1997 |
| 卷号 | 56期号:22页码:14435 |
| 关键词 | GROUND-STATE PROPERTIES QUANTUM HEISENBERG ANTIFERROMAGNETS HALDANE-GAP ANTIFERROMAGNETS MONTE-CARLO CALCULATION MEAN-FIELD THEORY ELEMENTARY EXCITATIONS UNIAXIAL ANISOTROPY SYMMETRY-BREAKING ARBITRARY SPINS COMPOSITE SPIN |
| ISSN号 | 0163-1829 |
| 通讯作者 | Wang, HT: CHINESE ACAD SCI,INST PHYS,POB 603,BEIJING 100080,PEOPLES R CHINA. |
| 中文摘要 | The bond operator representation of quantum S=1/2 spins with the singlet state being projected out is applied to investigate the isotropic spin-1 Heisenberg antiferromagnetic chain H=Sigma(i)[S-i.Si+1-beta(S-i.Si+1)(2)]. Tn the approximation of Bose condensation, the ground-state properties of the system and their beta dependences are studied. The results at Heisenberg point beta=0 and at valence-bond-solid (VBS) point beta=-1/3 agree quite well with the analytical, numerical, and experimental studies. The excitation spectrum is nonsymmetric with respect to k=pi/2 and shows a minimum at k=pi. The beta dependences of the ground-state energy and the excitation gap show the similarities between the Heisenberg point and VBS point. The related properties of the spin ladders are also discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34282]  |
| 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,Shen, JL,Su, ZB. Bond operator theory of isotropic spin-1 antiferromagnetic chains[J]. PHYSICAL REVIEW B,1997,56(22):14435. |
| APA | Wang, HT,Shen, JL,&Su, ZB.(1997).Bond operator theory of isotropic spin-1 antiferromagnetic chains.PHYSICAL REVIEW B,56(22),14435. |
| MLA | Wang, HT,et al."Bond operator theory of isotropic spin-1 antiferromagnetic chains".PHYSICAL REVIEW B 56.22(1997):14435. |
入库方式： OAI收割
来源：物理研究所
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