High-pressure phase diagram in the manganites: a two-site model study (Articolo in rivista)

Type
Label
  • High-pressure phase diagram in the manganites: a two-site model study (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/8/1/003 (literal)
Alternative label
  • A. Sacchetti (1); P. Postorino (1); M. Capone (1,2) (2006)
    High-pressure phase diagram in the manganites: a two-site model study
    in New journal of physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Sacchetti (1); P. Postorino (1); M. Capone (1,2) (literal)
Pagina inizio
  • 3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1367-2630/8/1/003/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 8 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) 'Coherentia' CNR-INFM and Dipartimento di Fisica, Universitá di Roma 'La Sapienza', Piazzale A. Moro 2, I-00185, Rome, Italy (2) INFM-SMC and Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, I-00185, Rome, Italy (literal)
Titolo
  • High-pressure phase diagram in the manganites: a two-site model study (literal)
Abstract
  • The pressure dependence of the Curie temperature T-C in manganites, recently studied over a wide pressure range, is not qualitatively accounted for by the quenching of Jahn-Teller distortions, and suggests the occurrence of a new pressure-activated localizing process. On the basis of several high-pressure experiments, the antiferromagnetic (AF) interaction between the core spins has been suggested as a good candidate for such a localizing mechanism. We present a theoretical calculation of T-C based on a two-site double-exchange model with electron-phonon coupling interaction and direct superexchange (SE) between the t(2g) core spins. We calculate the pressure dependence of T-C and compare it with the experimental phase diagram. Our results describe the experimental behaviour quite well only if a pressure-activated enhancement of the AF-SE interaction is assumed. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it