Tunable anisotropic superfluidity in an optical kagome superlattice

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Tunable anisotropic superfluidity in an optical kagome superlattice
	Zhang, XF; Wang, T; Eggert, S; Pelster, A
刊名	PHYSICAL REVIEW B
	2015
卷号	92 期号:1 页码:14512
通讯作者	Zhang, XF (reprint author), Tech Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany.
英文摘要	We study the phase diagram of the Bose-Hubbard model on the kagome lattice with a broken sublattice symmetry. Such a superlattice structure can naturally be created and tuned by changing the potential offset of one sublattice in the optical generation of the frustrated lattice. The superstructure gives rise to a rich quantum phase diagram, which is analyzed by combining quantum Monte Carlo simulations with the generalized effective potential Landau theory. Mott phases with noninteger filling and a characteristic order along stripes are found, which show a transition to a superfluid phase with an anisotropic superfluid density. Surprisingly, the direction of the superfluid anisotropy can be tuned by changing the particle number, the hopping strength, or the interaction. Finally, we discuss characteristic signatures of anisotropic phases in time-of-flight absorption measurements.
学科主题	Physics
类目[WOS]	Physics, Condensed Matter
关键词[WOS]	ANTIFERROMAGNET ; TRANSITION ; INSULATOR ; LATTICES ; PHYSICS ; GASES ; ATOMS ; STATE
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20916]
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	Zhang, XF,Wang, T,Eggert, S,et al. Tunable anisotropic superfluidity in an optical kagome superlattice[J]. PHYSICAL REVIEW B,2015,92(1):14512.
APA	Zhang, XF,Wang, T,Eggert, S,&Pelster, A.(2015).Tunable anisotropic superfluidity in an optical kagome superlattice.PHYSICAL REVIEW B,92(1),14512.
MLA	Zhang, XF,et al."Tunable anisotropic superfluidity in an optical kagome superlattice".PHYSICAL REVIEW B 92.1(2015):14512.