GROUND-STATE PROPERTIES OF THE SPIN-1 2 ANTIFERROMAGNETIC HEISENBERG-MODEL ON A CUBIC LATTICE BY A MONTE-CARLO METHOD/

Authors
SAUERWEIN RA DEOLIVEIRA MJ
Citation
Ra. Sauerwein et Mj. Deoliveira, GROUND-STATE PROPERTIES OF THE SPIN-1 2 ANTIFERROMAGNETIC HEISENBERG-MODEL ON A CUBIC LATTICE BY A MONTE-CARLO METHOD/, Modern physics letters B, 9(10), 1995, pp. 619-627
Citations number
15
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter","Physycs, Mathematical
Journal title
Modern physics letters B → ACNP
ISSN journal
02179849
Volume
9
Issue
10
Year of publication
1995
Pages
619 - 627
Database
ISI
SICI code
0217-9849(1995)9:10<619:GPOTS2>2.0.ZU;2-D
Abstract
The spin-1/2 antiferromagnetic Heisenberg model with spatial anisotrop y is studied on a cubic lattice by a Monte Carlo Method. Two types of spatial anisotropies are considered: planar and axial. The staggered m agnetization m(dagger) and the ground state energy per site epsilon(0) are obtained as a function of the anisotropy. In the isotropic case w e have obtained m(dagger) = 0.429 +/- 0.001 in units where the saturat ed value is 0.5 and epsilon(0) = -0.899 +/- 0.001.