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Zhang, XF; Hu, SJ; Pelster, A; Eggert, S3,3
Quantum Domain Walls Induce Incommensurate Supersolid Phase on the Anisotropic Triangular Lattice
Source PublicationPHYSICAL REVIEW LETTERS
Language英语
KeywordSPIN-LIQUID FRUSTRATION SUPERFLUID CRYSTALS BOSONS ATOMS
AbstractWe investigate the extended hard-core Bose-Hubbard model on the triangular lattice as a function of spatial anisotropy with respect to both hopping and nearest-neighbor interaction strength. At half-filling the system can be tuned from decoupled one-dimensional chains to a two-dimensional solid phase with alternating density order by adjusting the anisotropic coupling. At intermediate anisotropy, however, frustration effects dominate and an incommensurate supersolid phase emerges, which is characterized by incommensurate density order as well as an anisotropic superfluid density. We demonstrate that this intermediate phase results from the proliferation of topological defects in the form of quantum bosonic domain walls. Accordingly, the structure factor has peaks at wave vectors, which are linearly related to the number of domain walls in a finite system in agreement with extensive quantum Monte Carlo simulations. We discuss possible connections with the supersolid behavior in the high-temperature superconducting striped phase.
2016
Volume117Issue:19Pages:193201
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1103/PhysRevLett.117.193201
Indexed BySCI
Funding OrganizationChinese Academy of Sciences via the Open Project Program of the State Key Laboratory of Theoretical Physics ; Nachwuchsring of the TU Kaiserslautern ; German Research Foundation (DFG) [SFB/TR49, SFB/TR173, SFB/TR185]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23283
Collection理论物理所科研产出_SCI论文
Affiliation1.[Zhang, Xue-Feng
2.Hu, Shijie
3.Pelster, Axel
4.Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
5.Univ Kaiserslautern, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany
6.Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
7.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, XF,Hu, SJ,Pelster, A,et al. Quantum Domain Walls Induce Incommensurate Supersolid Phase on the Anisotropic Triangular Lattice[J]. PHYSICAL REVIEW LETTERS,2016,117(19):193201.
APA Zhang, XF,Hu, SJ,Pelster, A,&Eggert, S.(2016).Quantum Domain Walls Induce Incommensurate Supersolid Phase on the Anisotropic Triangular Lattice.PHYSICAL REVIEW LETTERS,117(19),193201.
MLA Zhang, XF,et al."Quantum Domain Walls Induce Incommensurate Supersolid Phase on the Anisotropic Triangular Lattice".PHYSICAL REVIEW LETTERS 117.19(2016):193201.
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