Magnetic ordering under strain and spin-peierls dimerization in GeCuO3 (Articolo in rivista)

Type
Label
  • Magnetic ordering under strain and spin-peierls dimerization in GeCuO3 (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Filippetti, A; Fiorentini, V (2007)
    Magnetic ordering under strain and spin-peierls dimerization in GeCuO3
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Filippetti, A; Fiorentini, V (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 98 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Cagliari, CNR, INFM, SLACS, I-09042 Monserrato, CA, Italy; Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy (literal)
Titolo
  • Magnetic ordering under strain and spin-peierls dimerization in GeCuO3 (literal)
Abstract
  • Studying from first principles the competition between ferromagnetic (FM) and antiferromagnetic (AF) interactions in the charge-transfer-insulator GeCuO3, we predict that a small external pressure should switch the uniform AF ground state to FM, and estimate (using exchange parameters computed as a function of strain) the competing AF couplings and the transition temperature to the dimerized spin-Peierls state. Although idealized as a one-dimensional Heisenberg antiferromagnet, GeCuO3 is found to be influenced by nonideal geometry and side groups. (literal)
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