The study of spin-spin correlations in quasi-one-dimensional Heisenberg antiferromagnetic clusters

Details The study of spin-spin correlations in quasi-one-dimensional Heisenberg antiferromagnetic clusters The study of spin-spin correlations in quasi-one-dimensional Heisenberg antiferromagnetic clusters

2001-11-22

arxiv.org/abs/cond-mat/0111424v1

Physics

Condensed Matter

Strongly Correlated Electrons

accepted by Journal of Physics: Condensed Matter

Scientific paper

10.1088/0953-8984/14/3/317

For a class of quasi-one-dimensional clusters, by using exact diagonalization, we study the effect of side spins on the spin-spin correlations on chain. Our calculations show that the side spins added in the same sublattice can effectively strengthen the spin-spin correlations in large distance region and make the change tend to flat. It is exactly proved that periodically adding side spins can set up magnetic long-range orders in the ground state. Also we investigate the effect of the density of side spins on correlation strength. The case that two sublattices have different localized spins is discussed.

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