Supersolidity and phase diagram of soft-core bosons on a triangular lattice
文献类型：期刊论文
| 作者 | Gan, Jing-Yu; Wen, Yu-Chuan; Yu, Yue ; Gan, JY , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2007 |
| 卷号 | 75期号:9页码:- |
| 关键词 | Quantum Monte-carlo Bose-einstein Condensation Superfluid Helium Model Crystals Atoms |
| ISSN号 | 1098-0121 |
| 英文摘要 | We study the soft-core extended Bose-Hubbard model in a two-dimensional triangular lattice by using the quantum Monte Carlo methods. The ground-state phase diagram of the system exhibits a very fruitful structure and is much intriguing. Aside from the Mott insulating state, four kinds of solid states with respect to the commensurate filling factors rho=1/3,2/3 and rho=1 are identified. In incommensurate fillings, superfluid, supersolid, as well as phase-separation states are detected. As in the case of the hard-core bosons, a supersolid phase exists in 1/3 < 2/3 while it is unstable toward the phase separation in rho < 1/3. However, this instability is refrained in 2/3 < 1 due to the softening of the bosons, and then a supersolid phase survives. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000245328500075 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5778]  |
| 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 | Gan, JY , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gan, Jing-Yu,Wen, Yu-Chuan,Yu, Yue,et al. Supersolidity and phase diagram of soft-core bosons on a triangular lattice[J]. PHYSICAL REVIEW B,2007,75(9):-. |
| APA | Gan, Jing-Yu,Wen, Yu-Chuan,Yu, Yue,&Gan, JY , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.(2007).Supersolidity and phase diagram of soft-core bosons on a triangular lattice.PHYSICAL REVIEW B,75(9),-. |
| MLA | Gan, Jing-Yu,et al."Supersolidity and phase diagram of soft-core bosons on a triangular lattice".PHYSICAL REVIEW B 75.9(2007):-. |
入库方式： OAI收割
来源：理论物理研究所
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