Abstract
The authors compute the mean spin per site (Sz) using the linearised randomly dilute two-dimensional antiferromagnetic Heisenberg model developed by Thorpe and Alben. The result shows that (S- mod (Sz) mod )/S is 14-16% near the percolation concentration. Mean spins on small finite clusters in this model are in very poor agreement with exact results of (S z)=0 for HA=0. The mean spin on the largest cluster is reasonably self-consistent but spatial inhomogeneities in (Si z) are not treated self-consistently in the model.
Original language | English (US) |
---|---|
Article number | 019 |
Pages (from-to) | 753-759 |
Number of pages | 7 |
Journal | Journal of Physics C: Solid State Physics |
Volume | 11 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1 1978 |