Stripe width and nonlocal domain walls in the two-dimensional dipolar frustrated Ising ferromagnet (Articolo in rivista)

Type
Label
  • Stripe width and nonlocal domain walls in the two-dimensional dipolar frustrated Ising ferromagnet (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.77.092414 (literal)
Alternative label
  • Alessandro Vindigni; Niculin Saratz; Oliver Portmann; Danilo Pescia; Paolo Politi (2008)
    Stripe width and nonlocal domain walls in the two-dimensional dipolar frustrated Ising ferromagnet
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alessandro Vindigni; Niculin Saratz; Oliver Portmann; Danilo Pescia; Paolo Politi (literal)
Pagina inizio
  • 092414-1 (literal)
Pagina fine
  • 092414-4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • American Physical Society (APS). (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Laboratorium für Festkörperphysik, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland 2) Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy (literal)
Titolo
  • Stripe width and nonlocal domain walls in the two-dimensional dipolar frustrated Ising ferromagnet (literal)
Abstract
  • We describe a type of magnetic domain wall that, in contrast to Bloch or Néel walls, is nonlocalized and, in a certain temperature range, nonmonotonic. The wall appears as a mean-field solution of the two-dimensional ferromagnetic Ising model frustrated by a long-ranged dipolar interaction. We provide experimental evidence of this wall delocalization in the stripe-domain phase of perpendicularly magnetized ultrathin magnetic films. In agreement with experimental results, we find that the stripe width decreases with increasing temperature and approaches a finite value at the Curie temperature following a power law. The same kind of wall and a similar temperature dependence of the stripe width are expected in the mean-field approximation of the two-dimensional Coulomb frustrated Ising ferromagnet. (literal)
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