Finite size Spin Wave theory of the triangular Heisenberg model

Preprint

17 September 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9909268

Abstract

We present a finite size spin wave calculation on the Heisenberg antiferromagnet on the triangular lattice focusing in particular on the low-energy part of the excitation spectrum. For s=1/2 the good agreement with the exact diagonalization and quantum Monte Carlo results supports the reliability of the spin wave expansion to describe the low-energy spin excitations of the Heisenberg model even in presence of frustration. This indicates that the spin susceptibility of the triangular antiferromagnet is very close to the linear spin wave result.

Keywords

FINITE SIZE SPIN
HEISENBERG MODEL
ANTIFERROMAGNET
SIZE SPIN WAVE
MONTE CARLO
TRIANGULAR
SPIN WAVE

All Related Versions

Version 1, 1999-09-17, ArXiv
Published version: Physical Review B, 61 (17), 11529.

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