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Wang, YC; Guo, WA; Sandvik, AW; Wang, YC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions
Source PublicationPHYSICAL REVIEW LETTERS
Language英语
AbstractWe present a quantum Monte Carlo study of the "quantum glass" phase of the two-dimensional Bose-Hubbard model with random potentials at filling rho = 1. In the narrow region between the Mott and superfluid phases, the compressibility has the form kappa similar to exp(-b/T alpha) + c with a < 1 and c vanishing or very small. Thus, at T = 0 the system is either incompressible (a Mott glass) or nearly incompressible (a Mott-glass-like anomalous Bose glass). At stronger disorder, where a glass reappears from the superfluid, we find a conventional highly compressible Bose glass. On a path connecting these states, away from the superfluid at larger Hubbard repulsion, a change of the disorder strength by only 10% changes the low-temperature compressibility by more than 4 orders of magnitude, lending support to two types of glass states separated by a phase transition or a sharp crossover.
2015
Volume114Issue:10Pages:105303
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1103/PhysRevLett.114.105303
Indexed BySCI
Funding OrganizationNSFC [11175018] ; NSFC [11175018] ; NSFC [11175018] ; NSFC [11175018] ; NSF [DMR-1104708, DMR-1410126] ; NSF [DMR-1104708, DMR-1410126] ; NSF [DMR-1104708, DMR-1410126] ; NSF [DMR-1104708, DMR-1410126]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21058
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWang, YC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Recommended Citation
GB/T 7714
Wang, YC,Guo, WA,Sandvik, AW,et al. Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions[J]. PHYSICAL REVIEW LETTERS,2015,114(10):105303.
APA Wang, YC,Guo, WA,Sandvik, AW,&Wang, YC .(2015).Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions.PHYSICAL REVIEW LETTERS,114(10),105303.
MLA Wang, YC,et al."Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions".PHYSICAL REVIEW LETTERS 114.10(2015):105303.
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