QUANTUM MONTE-CARLO ANALYSIS OF THE 2D HEISENBERG-ANTIFERROMAGNET WITH S=1 2 - THE INFLUENCE OF EXCHANGE-ANISOTROPY/

Authors
APLESNIN SS
Citation
Ss. Aplesnin, QUANTUM MONTE-CARLO ANALYSIS OF THE 2D HEISENBERG-ANTIFERROMAGNET WITH S=1 2 - THE INFLUENCE OF EXCHANGE-ANISOTROPY/, Journal of physics. Condensed matter (Print), 10(44), 1998, pp. 10061-10065
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Journal of physics. Condensed matter (Print) → ACNP
ISSN journal
09538984
Volume
10
Issue
44
Year of publication
1998
Pages
10061 - 10065
Database
ISI
SICI code
0953-8984(1998)10:44<10061:QMAOT2>2.0.ZU;2-N
Abstract
The two-dimensional (2D) Heisenberg model with exchange anisotropy Del ta = 1 - J(x)/J(z) (J < 0) and S = 1/2 is studied by the quantum Monte Carlo method. Energy and spin-spin correlation functions are calculat ed. The staggered magnetization sigma dependence 1/sigma = 1 + 0.13(1) ln(1/Delta) an anisotropy exchange is determined.