Effect of external pressure on the magnetic properties of LnFeAsO (Ln D La, Ce, Pr, Sm) (Articolo in rivista)

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  • Effect of external pressure on the magnetic properties of LnFeAsO (Ln D La, Ce, Pr, Sm) (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-2048/25/8/084009 (literal)
Alternative label
  • Roberto De Renzi1, Pietro Bonf`a1, Marcello Mazzani1, Samuele Sanna2, Giacomo Prando2,7, Pietro Carretta2, Rustem Khasanov3, Alex Amato3, Hubertus Luetkens3, Markus Bendele4, Fabio Bernardini5, Sandro Massidda5, Andrea Palenzona6, Matteo Tropeano6 and Maurizio Vignolo6 (2012)
    Effect of external pressure on the magnetic properties of LnFeAsO (Ln D La, Ce, Pr, Sm)
    in Superconductor science and technology (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Roberto De Renzi1, Pietro Bonf`a1, Marcello Mazzani1, Samuele Sanna2, Giacomo Prando2,7, Pietro Carretta2, Rustem Khasanov3, Alex Amato3, Hubertus Luetkens3, Markus Bendele4, Fabio Bernardini5, Sandro Massidda5, Andrea Palenzona6, Matteo Tropeano6 and Maurizio Vignolo6 (literal)
Pagina inizio
  • 084009 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 25 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Dipartimento di Fisica and Unit`a CNISM di Parma, I-43124 Parma, Italy 2 Dipartimento di Fisica 'A Volta' and Unit`a CNISM di Pavia, I-27100 Pavia, Italy 3 Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland 4 University of Zurich, Winterthurer Strasse 190, 8057, Zurich, Switzerland 5 CNR-SLACS and Universit`a di Cagliari, I-09042 Monserrato, Italy 6 CNR-SPIN and Universit`a di Genova, via Dodecaneso 33, I-16146 Genova, Italy (literal)
Titolo
  • Effect of external pressure on the magnetic properties of LnFeAsO (Ln D La, Ce, Pr, Sm) (literal)
Abstract
  • We investigate the effect of external pressure on magnetic order in undoped LnFeAsO (Ln =La, Ce, Pr, Sm) by using muon spin relaxation measurements and ab initio calculations. Both the magnetic transition temperature Tm and the Fe magnetic moment decrease with external pressure. The effect is observed to be lanthanide dependent, with the strongest response for Ln = La and the weakest for Ln = Sm. The trend is qualitatively in agreement with our density functional theory calculations. The same calculations allow us to assign a value of 0.68(2) ?B to the Fe moment, obtained from an accurate determination of the muon sites. Our data further show that the magnetic lanthanide order transitions do not follow the simple trend of Fe, possibly as a consequence of the different f-electron overlap. (literal)
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