Spin-lattice coupling as environmental effect (Articolo in rivista)

Type
Label
  • Spin-lattice coupling as environmental effect (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1742-6596/200/2/022069 (literal)
Alternative label
  • Alessandro Cuccoli (1); Niccolò Del Sette (1); Ruggero Vaia (2) (2010)
    Spin-lattice coupling as environmental effect
    in Journal of physics. Conference series (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alessandro Cuccoli (1); Niccolò Del Sette (1); Ruggero Vaia (2) (literal)
Pagina inizio
  • 022069-1 (literal)
Pagina fine
  • 022069-4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1742-6596/200/2/022069/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 200 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • Section2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica, Università di Firenze e Unità CNISM, via G. Sansone 1, I-50019 Sesto Fiorentino (FI), Italy (2) Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI), Italy (literal)
Titolo
  • Spin-lattice coupling as environmental effect (literal)
Abstract
  • The exchange constant in a magnetic system results from the overlap of orbitals, so it depends upon the ion distance and yields a coupling with the lattice vibrations: this can strongly influence the statistical mechanics of magnets. As the fast lattice dynamics allows for a rapid thermalization, phonon-induced spin correlations can be reasonably neglected, so that phonons can be regarded as a thermalized environment (or bath) for the spins. It is therefore natural to treat it within a Caldeira-Leggett scheme, i.e., by the influence action obtained after tracing-out the bath's degrees of freedom, whose contribution can be accounted for within a known semiclassical approach. In this way extended phase diagrams, accounting for the environmental interaction, can be drawn for the magnetic phase transitions. (literal)
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