Quantum Heisenberg model with long-range ferromagnetic interactions: A Green's function approach - art. no. 172402

Authors
Hamedoun, M Cherriet, Y Hourmatallah, A Benzakour, N
Citation
M. Hamedoun et al., Quantum Heisenberg model with long-range ferromagnetic interactions: A Green's function approach - art. no. 172402, PHYS REV B, 6317(17), 2001, pp. 2402
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6317
Issue
17
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010501)6317:17<2402:QHMWLF>2.0.ZU;2-3
Abstract
A Green-function method is employed within a random phase approximation to study the one-dimensional quantum Heisenberg model with long-range ferromag netic interaction proportional to r(-p). We have shown that for l < p < 2 t here exists a phase transition at finite temperatures and estimate its crit ical temperature.