Effective theory of the hole-doped spin-1 chain
文献类型：期刊论文
| 作者 | Dai, X; Chen, B; Su, ZB ; Dai X , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1999 |
| 卷号 | 59期号:18页码:11801-11812 |
| 关键词 | One-dimensional Antiferromagnets Haldane-gap Heisenberg-antiferromagnet Y2banio5 Dynamics Systems States Oxides Model |
| ISSN号 | 1098-0121 |
| 英文摘要 | An effective theory for the hole-doped spin-1 antiferromagnetic chain is proposed in this paper. The two branches of low-energy quasiparticle excitation is obtained by the diagrammatic technique. In the large t limit (in which t is the hole hopping term), the lower band is essentially the bound state of one hole and one magnon and the other band is the single-hole state. We find a critical value of t, t(c) = 0.21 Delta(H) (in which Delta(H) is the Haldane gap). For t > t(c), with the decrement of t, the mixing of these two bands become stronger and stronger, and at the same time the effective band mass becomes larger and larger. When t < t(c) the minimum of the lower band moves away from zero to the other point between zero and pi/2. The spin structure factor is also calculated in this paper, and we find that for the large t Limit the main contribution is from the interband transition, which induces a resonant peak in the Haldane gap. For the small t limit the main contribution is from the intraband transition, which only causes a diffusionlike broad bump in the Haldane gap. [S0163-1829(99)03817-5]. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000080359500029 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13157]  |
| 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 | Dai X , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Dai, X,Chen, B,Su, ZB,et al. Effective theory of the hole-doped spin-1 chain[J]. PHYSICAL REVIEW B,1999,59(18):11801-11812. |
| APA | Dai, X,Chen, B,Su, ZB,&Dai X , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(1999).Effective theory of the hole-doped spin-1 chain.PHYSICAL REVIEW B,59(18),11801-11812. |
| MLA | Dai, X,et al."Effective theory of the hole-doped spin-1 chain".PHYSICAL REVIEW B 59.18(1999):11801-11812. |
入库方式： OAI收割
来源：理论物理研究所
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