Antiferromagnetism in a doped spin-Peierls model: classical and quantum behaviors

Details Antiferromagnetism in a doped spin-Peierls model: classical and quantum behaviors Antiferromagnetism in a doped spin-Peierls model: classical and quantum behaviors

1999-12-08

arxiv.org/abs/cond-mat/9912136v1

Physics

Condensed Matter

Strongly Correlated Electrons

17 pages, 10 figures

Scientific paper

10.1007/s100510070228

We address the problem of antiferromagnetism in a two dimensional model of doped spin-Peierls system, at the classical and quantum levels. A Bethe-Peierls solution is derived for the classical model, with an ordering temperature proportional to the doping concentration. The quantum model is treated in a cluster renormalization group showing a finite randomness behavior and an antiferromagnetic susceptibility at low temperature.

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