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Zhang, XF; Wang, T; Eggert, S; Pelster, A; Zhang, XF (reprint author), Tech Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany.
Tunable anisotropic superfluidity in an optical kagome superlattice
发表期刊PHYSICAL REVIEW B
语种英语
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.
2015
卷号92期号:1页码:14512
学科领域Physics
DOIhttp://dx.doi.org/10.1103/PhysRevB.92.014512
收录类别SCI
项目资助者Allianz fur Hochleistungsrechnen Rheinland-Pfalz ; Allianz fur Hochleistungsrechnen Rheinland-Pfalz ; Allianz fur Hochleistungsrechnen Rheinland-Pfalz ; Allianz fur Hochleistungsrechnen Rheinland-Pfalz ; German Research Foundation (DFG) via the Collaborative Research Center [SFB/TR49] ; German Research Foundation (DFG) via the Collaborative Research Center [SFB/TR49] ; German Research Foundation (DFG) via the Collaborative Research Center [SFB/TR49] ; German Research Foundation (DFG) via the Collaborative Research Center [SFB/TR49] ; Chinese Academy of Sciences via the Open Project Program of the State Key Laboratory of Theoretical Physics ; Chinese Academy of Sciences via the Open Project Program of the State Key Laboratory of Theoretical Physics ; Chinese Academy of Sciences via the Open Project Program of the State Key Laboratory of Theoretical Physics ; Chinese Academy of Sciences via the Open Project Program of the State Key Laboratory of Theoretical Physics
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20916
专题理论物理所科研产出_SCI论文
通讯作者Zhang, XF (reprint author), Tech Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany.
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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,&Zhang, XF .(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.
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