Kagom{\'e} Lattice Antiferromagnet Stripped to Its Basics
Strongly Correlated Electrons
2009-10-31 v1
Abstract
We study a model of a spin S = 1/2 Heisenberg antiferromagnet on a one dimensional lattice with the local symmetry of the two dimensional kagom{\'e} lattice. Using three complementary approaches, it is shown that the low energy spectrum can be described by two critical Ising models with different velocities. One of these velocities is small, leading to a strongly localized Majorana fermion. These excitations are singlet ones whereas the triplet sector has a spectral gap.
Cite
@article{arxiv.cond-mat/9807228,
title = {Kagom{\'e} Lattice Antiferromagnet Stripped to Its Basics},
author = {P. Azaria and C. Hooley and P. Lecheminant and C. Lhuillier and A. M. Tsvelik},
journal= {arXiv preprint arXiv:cond-mat/9807228},
year = {2009}
}
Comments
4 pages