Supersolid phase transitions for hard-core bosons on a triangular lattice

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	Supersolid phase transitions for hard-core bosons on a triangular lattice
	Yu, Y
刊名	PHYSICAL REVIEW B
	2011
卷号	84 期号:17 页码:174515
关键词	HELIUM
ISSN号	1098-0121
通讯作者	Zhang, XF (reprint author), Univ Kaiserslautern, Dept Phys, DE-67663 Kaiserslautern, Germany.
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.
学科主题	Physics
收录类别	SCI
资助信息	DAAD; DFG via the Research Center [Transregio 49]
原文出处	http://dx.doi.org/10.1103/PhysRevB.84.174515
语种	英语
WOS记录号	WOS:000297294400015
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14229]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Yu, Y. Supersolid phase transitions for hard-core bosons on a triangular lattice[J]. PHYSICAL REVIEW B,2011,84(17):174515.
APA	Yu, Y.(2011).Supersolid phase transitions for hard-core bosons on a triangular lattice.PHYSICAL REVIEW B,84(17),174515.
MLA	Yu, Y."Supersolid phase transitions for hard-core bosons on a triangular lattice".PHYSICAL REVIEW B 84.17(2011):174515.