Hard-Core Repulsion and Supersolid Cluster Crystals
نویسندگان
چکیده
منابع مشابه
Supersolid phase of hard-core bosons on a triangular lattice.
We study properties of the supersolid phase observed for hard-core bosons on the triangular lattice near half-integer filling factor, and the phase diagram of the system at finite temperature. We find that the solid order is always of the (2m, -m, -m) with m changing discontinuously from positive to negative values at half filling, in contrast with phases observed for Ising spins in a transvers...
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We have systematically studied the hard-core Bose-Hubbard model with correlated hopping on a triangular lattice usi...
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Hard-core bosons on a triangular lattice with nearest-neighbor repulsion are a prototypical example of a system with supersolid behavior on a lattice. We show that in this model the physical origin of the supersolid phase can be understood quantitatively and analytically by constructing quasiparticle excitations of defects that are moving on an ordered background. The location of the solid to s...
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Xue-Feng Zhang (张学锋 ,1,2,* Yu-Chuan Wen (文渝川 ,3 and Sebastian Eggert1 1Physics Department and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany 2Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190, China 3Center of Theoretical Physics, Department of Physics, Capital Normal University, Beijing 10048, China Received 11 No...
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We study a model of hard-core bosons with frustrated nearest-neighbor hopping (t) and repulsion (V) on the triangular lattice. We argue for a supersolid ground state in the large repulsion (V>>|t|) limit where a dimer representation applies, by constructing a unitary mapping to the well-understood unfrustrated hopping case. This generalized "Marshall sign rule" allows us to establish the precis...
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ژورنال
عنوان ژورنال: Journal of Low Temperature Physics
سال: 2016
ISSN: 0022-2291,1573-7357
DOI: 10.1007/s10909-016-1633-6