Ordering and multiple phase transitions in ultrathin nickelate superlattices (Articolo in rivista)

Type
Label
  • Ordering and multiple phase transitions in ultrathin nickelate superlattices (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.86.195132 (literal)
Alternative label
  • Puggioni, D.(2), Filippetti, A.(1), Fiorentini, V(1)(2). (2012)
    Ordering and multiple phase transitions in ultrathin nickelate superlattices
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Puggioni, D.(2), Filippetti, A.(1), Fiorentini, V(1)(2). (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 19 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) CNR-IOM UOS Cagliari (2) Dipartimento di Fisica, Universita` di Cagliari, SP Monserrato-Sestu km.0.700, 09042 Monserrato (CA), Italy (literal)
Titolo
  • Ordering and multiple phase transitions in ultrathin nickelate superlattices (literal)
Abstract
  • We interpret via advanced ab initio calculations the multiple phase transitions observed recently in ultrathin LaNiO 3/LaAlO 3 superlattices. The ground state is insulating, weakly charge ordered, and antiferromagnetic due to concurrent structural distortion and weak valency disproportionation. We infer distinct transitions around 50 K and 110 K, respectively, from antiferromagnetic order to moment disorder, and from a structurally dimerized insulator to an undistorted metallic Pauli paramagnet (exhibiting a cupratelike Fermi surface). The results are in satisfactory agreement with experimental results. © 2012 American Physical Society. (literal)
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