Influence of frustration on a d=3 diluted antiferromagnet:
arXiv:cond-mat/9511036 · doi:10.1016/0304-8853(96)00037-6
Abstract
The influence of a frustrated bond on the magnetic properties of a d=3 uniaxial (Ising) b.c.c. diluted antiferromagnet, with emphasis in the compound , is investigated by a local mean-field numerical simulation. In particular we find that the initial drop of the saturation staggered magnetization () with concentration follows a percolation-like phenomenon characterized by an exponent . For the frustrated samples, however, this regime is followed by a second one identified by a ``long tail" effect such that is zero only at the percolation threshold. Our numerical data also confirms a spin-glass phase near this threshold.
arXiv comment11 pages (Latex) with 3 uuencoded postscript figures