Superfluid-Insulator transitions of bosons on Kagome lattice at non-integer fillings

Simple item page
dc.creatorSengupta, K.
dc.creatorIsakov, S. V.
dc.creatorKim, Yong Baek
dc.date2006-01-09
dc.date2006-07-05
dc.date.accessioned2026-07-07T06:57:25Z
dc.date.available2026-07-07T06:57:25Z
dc.descriptionWe study the superfluid-insulator transitions of bosons on the Kagome lattice at incommensurate filling factors f=1/2 and 2/3 using a duality analysis. We find that at f=1/2 the bosons will always be in a superfluid phase and demonstrate that the T_3 symmetry of the dual (dice) lattice, which results in dynamic localization of vortices due to the Aharanov-Bohm caging effect, is at the heart of this phenomenon. In contrast, for f=2/3, we find that the bosons exhibit a quantum phase transition between superfluid and translational symmetry broken Mott insulating phases. We discuss the possible broken symmetries of the Mott phase and elaborate the theory of such a transition. Finally we map the boson system to a XXZ spin model in a magnetic field and discuss the properties of this spin model using the obtained results.
dc.description10 pages, 8 figures, a few typos corrected
dc.identifierhttps://arxiv.org/abs/cond-mat/0601175
dc.identifierhttp://arxiv.org/abs/cond-mat/0601175
dc.identifierPhys. Rev. B 73, 245103 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.245103
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/106961
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleSuperfluid-Insulator transitions of bosons on Kagome lattice at non-integer fillings
dc.typetext

Files

Collections

arXiv