Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice

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	Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice
	Zhang, Xue-Feng; Wen, Yu-Chuan; Eggert, Sebastian; Zhang, XF , Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
刊名	PHYSICAL REVIEW B
	2010
卷号	82 期号:22 页码:-
关键词	Consequences Helium Chains
ISSN号	1098-0121
英文摘要	We study the effect of impurities in a supersolid phase in comparison to the behavior in the solid and superfluid phases. A supersolid phase has been established for interacting hard-core bosons on a triangular lattice which may be realizable by ultracold atomic gases. Static vacancies are considered in this model which always lower the magnitude of the order parameter in the solid or superfluid phases. In the supersolid phase, however, the impurities directly affect both order parameters simultaneously and thereby reveal an interesting interplay between them. In particular, the solid order may be enhanced at the cost of a strong reduction in the superfluidity, which shows that the two order parameters cannot be in a simple superposition. We also observe an unusual impurity pinning effect in the solid ordered phase, which results in two distinct states separated by a first-order transition.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000286758100001
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/4995]
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	Zhang, XF , Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
推荐引用方式 GB/T 7714	Zhang, Xue-Feng,Wen, Yu-Chuan,Eggert, Sebastian,et al. Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice[J]. PHYSICAL REVIEW B,2010,82(22):-.
APA	Zhang, Xue-Feng,Wen, Yu-Chuan,Eggert, Sebastian,&Zhang, XF , Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany.(2010).Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice.PHYSICAL REVIEW B,82(22),-.
MLA	Zhang, Xue-Feng,et al."Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice".PHYSICAL REVIEW B 82.22(2010):-.