Experimental probing of exchange interactions between localized spins in the dilute magnetic insulator (Ga,Mn)N (Articolo in rivista)

Type
Label
  • Experimental probing of exchange interactions between localized spins in the dilute magnetic insulator (Ga,Mn)N (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.84.035206 (literal)
Alternative label
  • Bonanni A, Sawicki M, Devillers T, Stefanowicz W, Faina B, Li T, Winkler TE, Sztenkiel D, Navarro-Quezada A, Rovezzi M, Jakiela R, Grois A, Wegscheider M, Jantsch W, Suffczynski J, D'Acapito F, Meingast A, Kothleitner G, Dietl T (2011)
    Experimental probing of exchange interactions between localized spins in the dilute magnetic insulator (Ga,Mn)N
    in Physical review. B, Solid state
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bonanni A, Sawicki M, Devillers T, Stefanowicz W, Faina B, Li T, Winkler TE, Sztenkiel D, Navarro-Quezada A, Rovezzi M, Jakiela R, Grois A, Wegscheider M, Jantsch W, Suffczynski J, D'Acapito F, Meingast A, Kothleitner G, Dietl T (literal)
Pagina inizio
  • 035206 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 84 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institut f¨ ur Halbleiter- und Festk¨ orperphysik, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria Institute of Physics, Polish Academy of Sciences, al. Lotnik´ ow 32/46, 02-668 Warszawa, Poland Laboratory of Magnetism, Bialystok University, ul. Lipowa 41, 15-424 Bialystok, Poland Faculty of Physics, University of Warsaw, 00-681 Warszawa, Poland CNR-INFM-OGG, Italian Collaborating Research Group, \"GILDA\" - ESRF, 38043 Grenoble, France Institute for Electron Microscopy-FELMI, Graz University of Technology, 8010 Graz, Austria (literal)
Titolo
  • Experimental probing of exchange interactions between localized spins in the dilute magnetic insulator (Ga,Mn)N (literal)
Abstract
  • The sign, magnitude, and range of the exchange couplings between pairs of Mn ions is determined for (Ga,Mn)N and (Ga,Mn)N:Si withx?3%. The samples have been grown by metalorganic vapor phase epitaxy and characterized by secondary-ion mass spectroscopy; high-resolution transmission electron microscopy with capabilities allowing for chemical analysis, including the annular dark-field mode and electron energy loss spectroscopy; high-resolution and synchrotron x-ray diffraction; synchrotron extended x-ray absorption fine-structure; synchrotron x-ray absorption near-edge structure; infrared optics; and electron spin resonance. The results of high-resolution magnetic measurements and their quantitative interpretation have allowed us to verify a series ofab initiopredictions on the possibility of ferromagnetism in dilute magnetic insulators and to demonstrate that the interaction changes from ferromagnetic to antiferromagnetic when the charge state of the Mn ions is reduced from 3+to 2+. (literal)
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