Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice
Strongly Correlated Electrons
2015-08-18 v2 Statistical Mechanics
Abstract
The effect of the quenched bond-randomness on the ordering of the antiferromagnetic Heisenberg model on the kagome lattice is investigated by means of an exact-diagonalization method. When the randomness exceeds a critical value, the ground state of the model exhibits a transition within the non-magnetic state into the randomness-relevant gapless spin-liquid state. Implications to the S=1/2 kagome-lattice antiferromagnet herbertsmithite is discussed.
Keywords
Cite
@article{arxiv.1408.0606,
title = {Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice},
author = {Hikaru Kawamura and Ken Watanabe and Tokuro Shimokawa},
journal= {arXiv preprint arXiv:1408.0606},
year = {2015}
}
Comments
Slight modifications in the text, two references added. To appear in J. Phys. Soc. Jpn