Valence Bond Solids and Their Quantum Melting in Hard-Core Bosons on the Kagome Lattice

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

Using large scale quantum Monte Carlo simulations and dual vortex theory we analyze the ground state phase diagram of hard-core bosons on the kagome lattice with nearest neighbor repulsion. In contrast to the case of a triangular lattice, no supersolid emerges for strong interactions. While a uniform superfluid prevails at half-filling, two novel solid phases emerge at densities $ρ=1/3$ and $ρ=2/3$. These solids exhibit an only partial ordering of the bosonic density, allowing for local resonances on a subset of hexagons of the kagome lattice. We provide evidence for a weakly first-order phase transition at the quantum melting point between these solid phases and the superfluid.
4 pages, 7 figures

Keywords

Strongly Correlated Electrons, Superconductivity

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/108386

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0602430
 http://arxiv.org/abs/cond-mat/0602430
 Phys. Rev. Lett. 97, 147202 (2006)
 doi:10.1103/PhysRevLett.97.147202

Collections

arXiv