Phase diagram of the two-dimensional quantum antiferromagnet in a magnetic field (Articolo in rivista)

Type
Label
  • Phase diagram of the two-dimensional quantum antiferromagnet in a magnetic field (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2172209 (literal)
Alternative label
  • Cuccoli A. (1); Gori G. (2); Vaia R. (3); Verrucchi P. (3) (2006)
    Phase diagram of the two-dimensional quantum antiferromagnet in a magnetic field
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cuccoli A. (1); Gori G. (2); Vaia R. (3); Verrucchi P. (3) (literal)
Pagina inizio
  • 08H503-1 (literal)
Pagina fine
  • 08H503-3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 99 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • fasc. (8). American Institute of Physics (AIP). Proceedings of the 50th Annual Conference on Magnetism and Magnetic Materials / Spin Glasses and One-Dimensional Magnets. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Dipartimento di Fisica, Università di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino (FI), Italy 2) INFM, Unità di Ricerca di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino (FI), Italy 3) Istituto dei Sistemi Complessi-CNR, via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI), Italy (literal)
Titolo
  • Phase diagram of the two-dimensional quantum antiferromagnet in a magnetic field (literal)
Abstract
  • The two-dimensional Heisenberg antiferromagnet experiences an effective easy-plane anisotropy when a magnetic field is applied, giving rise to Berezinskii-Kosterlitz-Thouless (BKT) critical behavior. Remarkably, the strength of the effective anisotropy, and consequently the critical BKT temperature, can be tuned by varying the field. By means of the pure-quantum self-consistent harmonic approximation, that reduces the quantum model to an effective classical system, the phase diagram is constructed from its known classical counterpart. By classical Monte Carlo simulations of the effective system the thermodynamic quantities can be calculated. Comparison is made with the behavior observed experimentally in the S = 5/2 compound Mn(HCOO)22H2O. (literal)
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