Spin waves in the Frustrated Kagome Lattice Antiferromagnet KFe3(OH)6(SO4)2

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The spin wave excitations of the ideal S=5/2 Kagome lattice antiferromagnet KFe3(OH)6(SO4)2 have been measured using high-resolution inelastic neutron scattering. We directly observe a flat mode which corresponds to a lifted "zero energy mode," verifying a fundamental prediction for the Kagome lattice. A simple Heisenberg spin Hamiltonian provides an excellent fit to our spin wave data. The antisymmetric Dzyaloshinskii-Moriya interaction is the primary source of anisotropy and explains the low temperature magnetization and spin structure.
4 pages, 3 figures

Keywords

Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/172812

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0602036
 http://arxiv.org/abs/cond-mat/0602036
 Phys. Rev. Lett. 96, 247201 (2006)
 doi:10.1103/PhysRevLett.96.247201

Collections

arXiv