Ground state properties of the S=1/2 Heisenberg antiferromagnet on the triangular lattice

Authors
Capriotti, L Trumper, AE Sorella, S
Citation
L. Capriotti et al., Ground state properties of the S=1/2 Heisenberg antiferromagnet on the triangular lattice, J APPL PHYS, 87(9), 2000, pp. 7046-7048
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
87
Issue
9
Year of publication
2000
Part
3
Pages
7046 - 7048
Database
ISI
SICI code
0021-8979(20000501)87:9<7046:GSPOTS>2.0.ZU;2-E
Abstract
We investigate the ground state properties of the S=1/2 Heisenberg antiferr omagnet on the triangular lattice using mainly exact diagonalization (for l attices up to N=36 sites) and the recently developed Green Function Monte C arlo with stochastic reconfiguration (up to N=144). A systematic size scali ng of the order parameter and of the spin gap gives strong evidences for th e presence of long-range Neel order in the ground state of this highly frus trated model. (C) 2000 American Institute of Physics. [S0021-8979(00)49808- 7].