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题名: Supersolid phase transitions for hard-core bosons on a triangular lattice
作者: Zhang, XF ;  Dillenschneider, R ;  Yu, Y ;  Eggert, S
刊名: PHYSICAL REVIEW B
出版日期: 2011
卷号: 84, 期号:17, 页码:174515
关键词: HELIUM
学科分类: Physics
通讯作者: Zhang, XF (reprint author), Univ Kaiserslautern, Dept Phys, DE-67663 Kaiserslautern, Germany.
部门归属: [Zhang, Xue-Feng; Dillenschneider, Raoul; Eggert, Sebastian] Univ Kaiserslautern, Dept Phys, DE-67663 Kaiserslautern, Germany; [Zhang, Xue-Feng; Dillenschneider, Raoul; Eggert, Sebastian] Univ Kaiserslautern, Res Ctr OPTIMAS, DE-67663 Kaiserslautern, Germany; [Zhang, Xue-Feng; Yu, Yue] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Hard-core bosons on a triangular lattice with nearest-neighbor repulsion are a prototypical example of a system with supersolid behavior on a lattice. We show that in this model the physical origin of the supersolid phase can be understood quantitatively and analytically by constructing quasiparticle excitations of defects that are moving on an ordered background. The location of the solid to supersolid phase transition line is predicted from the effective model for both positive and negative (frustrated) hopping parameters. For positive hopping parameters the calculations agree very accurately with numerical quantum Monte Carlo simulations. The numerical results indicate that the supersolid to superfluid transition is first order.
资助者: DAAD; DFG via the Research Center [Transregio 49]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000297294400015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14229
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Zhang, XF,Dillenschneider, R,Yu, Y,et al. Supersolid phase transitions for hard-core bosons on a triangular lattice[J]. PHYSICAL REVIEW B,2011,84(17):174515.
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