Ground-State Properties of the SPIN-1/2 Antiferromagnetic Heisenberg Model on a Cubic Lattice by a Monte Carlo Method
Abstract
The spin-1/2 antiferromagnetic Heisenberg model with spatial anisotropy is studied on a cubic lattice by a Monte Carlo Method. Two types of spatial anisotropies are considered: planar and axial. The staggered magnetization m† and the ground state energy per site ɛ0 are obtained as a function of the anisotropy. In the isotropic case we have obtained m† = 0.429 ± 0.001 in units where the saturated value is 0.5 and ɛ0 = -0.899 ± 0.001.
- Publication:
-
Modern Physics Letters B
- Pub Date:
- 1995
- DOI:
- 10.1142/S0217984995000589
- Bibcode:
- 1995MPLB....9..619S