Bond-operator approach to the bilayer Heisenberg antiferromagnet
文献类型：期刊论文
| 作者 | Yu, DK ; Gu, Q ; Wang, HT ; Shen, JL |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1999 |
| 卷号 | 59期号:1页码:111 |
| 关键词 | 2-LAYER ANTIFERROMAGNET MAGNETIC-PROPERTIES SPIN LADDERS TRANSITION EXPANSIONS SPECTRUM BEHAVIOR MODEL GAPS |
| ISSN号 | 0163-1829 |
| 通讯作者 | Yu, DK: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The bilayer spin-1/2 antiferromagnetic Heisenberg model is studied by the bond-operator mean-field theory and perturbation theory. From both methods, the zero-temperature quantum phase transition occurs at a critical ratio of (J(2)/J(1))(c)approximate to 2.3, where J(1) and J(2) are the intralayer and interlayer coupling constants. Under the mean-field method, the obtained spin-wave mass, uniform susceptibility, and inverse correlation length at the critical point show good linear behavior versus temperature at low temperatures, in agreement with results of the nonlinear a model and quantum Monte Carlo simulations. On the other hand, the finite temperature perturbation theory gives a good description of the disordered phase in quite a large temperature range. The specific heat and uniform susceptibility exhibit broad maxima versus temperature, consistent with series expansion results. [S0163-1829(99)12501-3]. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34289]  |
| 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 | Yu, DK,Gu, Q,Wang, HT,et al. Bond-operator approach to the bilayer Heisenberg antiferromagnet[J]. PHYSICAL REVIEW B,1999,59(1):111. |
| APA | Yu, DK,Gu, Q,Wang, HT,&Shen, JL.(1999).Bond-operator approach to the bilayer Heisenberg antiferromagnet.PHYSICAL REVIEW B,59(1),111. |
| MLA | Yu, DK,et al."Bond-operator approach to the bilayer Heisenberg antiferromagnet".PHYSICAL REVIEW B 59.1(1999):111. |
入库方式： OAI收割
来源：物理研究所
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