Search for quantum dimer phases and transitions in a frustrated spin ladder

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

A two-leg spin-1/2 ladder with diagonal interactions is investigated numerically. We focus our attention on the possibility of columnar dimer phase, which was recently predicted based on a reformulated bosonization theory. By using density matrix renormalization group technique and exact diagonalization method, we calculate columnar dimer order parameter, spin correlation on a rung, string order parameters, and scaled excitation gaps. Carefully using various finite-size scaling techniques, our results show no support for the existence of columnar dimer phase in the spin ladder under consideration.
5 pages, 4 figures. To be published in Phys. Rev. B

Keywords

Strongly Correlated Electrons, Statistical Mechanics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/111000

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0605719
 http://arxiv.org/abs/cond-mat/0605719
 Phys. Rev. B 73, 224433 (2006)
 doi:10.1103/PhysRevB.73.224433

Collections

arXiv