Correlations short-range antiferromagnetic

The mixed-valence compound with stoichiometry [A][CrnCrln(ox)3] (A = NBu4, P(Ph)4) has also been synthesised and fully characterised structurally and magnetically [88], Again, although short-range antiferromagnetic correlations were ob-... 

A spin ladder is an array of coupled spin chains. The horizontal chains are called the legs, the vertical ones, rungs. In the case of spin one-half antiferromagnet spin-ladders, these systems show a. remarkable behaviour in function of the number of leg there is a gap in the excitation spectrum of even-leg ladders and, on the contrary, no gap in the excitation spectrum of odd-leg ladders. In terms of correlation lengths, this means that there is short (long) -range spin correlation in even (odd) -legladder (see [24] for a review). 

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