Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures (Articolo in rivista)

Type
Label
  • Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.111.087204 (literal)
Alternative label
  • Salluzzo, M.a , Gariglio, S.b, Stornaiuolo, D.b, Sessi, V.c, Rusponi, S.d, Piamonteze, C.e, De Luca, G.M.a, Minola, M.f, Marré, D.g, Gadaleta, A.g, Brune, H.d, Nolting, F.e, Brookes, N.B.c, Ghiringhelli, G.f (2013)
    Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Salluzzo, M.a , Gariglio, S.b, Stornaiuolo, D.b, Sessi, V.c, Rusponi, S.d, Piamonteze, C.e, De Luca, G.M.a, Minola, M.f, Marré, D.g, Gadaleta, A.g, Brune, H.d, Nolting, F.e, Brookes, N.B.c, Ghiringhelli, G.f (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84883181108&partnerID=q2rCbXpz (literal)
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  • 111 (literal)
Rivista
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  • 8 (literal)
Note
  • Scopu (literal)
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  • a CNR-SPIN, Complesso MonteSantangelo via Cinthia, I-80126 Napoli, Italy b Département de Physique de la Matière Condensée, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland c European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, Boite Postale 220, F-38043 Grenoble Cedex, France d Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland e Swiss Light Source, Paul Scherrer Institutc, CH-5232 Villigen PSI, Switzerland f CNR-SPIN, Dipartimento di Fisica, Politecnico de Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy g CNR-SPIN and Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, I-14146 Genova, Italy (literal)
Titolo
  • Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures (literal)
Abstract
  • Possible ferromagnetism induced in otherwise nonmagnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism is realized at the interface between SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using polarization dependent x-ray absorption spectroscopy, we find that in both cases the magnetism can be stabilized by a negative exchange interaction between the electrons transferred to the interface and local magnetic moments. These local magnetic moments are associated with magnetic Ti3+ ions at the interface itself for LaAlO3/SrTiO3 and to Mn3 + ions in the overlayer for BiMnO3/SrTiO3. In LaAlO3/SrTiO3 the induced magnetism is quenched by annealing in oxygen, suggesting a decisive role of oxygen vacancies in this phenomenon. © 2013 American Physical Society. (literal)
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