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

Authors
Melin, R
Citation
R. Melin, Antiferromagnetism in a doped spin-Peierls model: Classical and quantum behaviors, EUR PHY J B, 16(2), 2000, pp. 261-268
Citations number
35
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
16
Issue
2
Year of publication
2000
Pages
261 - 268
Database
ISI
SICI code
1434-6028(200007)16:2<261:AIADSM>2.0.ZU;2-2
Abstract
We address the problem of antiferromagnetism in a two-dimensional model of doped spin-Peierls system, at the classical and quantum levels. A Bethe-Pei erls solution is derived for the classical model, with an ordering temperat ure 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.