J. Curely et R. Georges, ISOTROPIC CLASSICAL SPIN CHAINS SHOWING NEAREST-NEIGHBOR CORRELATED CATIONIC DISTRIBUTIONS, Journal of mathematical physics, 35(8), 1994, pp. 3998-4004
A model is proposed for calculating the magnetic susceptibility of iso
tropic classical spin chains showing nearest neighbor correlated catio
nic distributions. It allows one to obtain a general closed-form expre
ssion: This expression formally looks like previous ones obtained in t
he case of random chains for which the neighboring cationic species ar
e not correlated; but here the previous intervening scalar parameters
are replaced by vectorial and matricial expressions.