Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhyRevB.73.052403 (literal)

Alternative label

• M.P. de Jong; I. Bergenti; W. Osikowicz; R. Friedlein; V.A. Dediu; C. Taliani; W.R.Salaneck (2006)
  Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission
  in Physical review. B, Condensed matter and materials physics (Online)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• M.P. de Jong; I. Bergenti; W. Osikowicz; R. Friedlein; V.A. Dediu; C. Taliani; W.R.Salaneck (literal)

Pagina inizio

• 52403 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://prb.aps.org/pdf/PRB/v73/i5/e052403 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 73 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 5 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1. Linkoping Univ, Dept Phys, IFM, S-58183 Linkoping, Sweden 2. ISMN CNR, I-40129 Bologna, Italy (literal)

Titolo

• Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission (literal)

Abstract

• Nonferromagnetic Mn2+ ions can be readily formed at the surface of half metallic La0.7Sr0.3MnO3 manganite as demonstrated by deoxygenating surface treatments. The 3d(5) contribution of these Mn2+ ions to the valence-band electronic structure has been characterized using Mn(2p) to 3d resonant photoemission measurements. The Mn2+ related 3d electrons were found to be stabilized by about 2 eV with respect to the mixed-valence 3d states, indicating their strong localization. Active participation of Mn2+ states in both spin and charge conductivity processes is therefore excluded. A two-channel picture, including independent Mn3+/Mn4+ and Mn2+ channels, emerges from detailed data analysis. Reversible Mn2+ formation and straightforward oxygen annealing effects point to a direct bonding between Mn2+ and oxygen vacancies that are most probably created at preexisting structural defects. The t(2g) and e(g) states of the mixed valence Mn3+/Mn4+ ions remain unaffected as the Mn2+ content increases, indicating a robust Mn3+/Mn4+ channel independent of structural defects. (literal)

Prodotto di

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)
• Nanostrutture Magnetiche per la Spintronica e la Nanomedicina (PM.P04.006.002) (Modulo)

Autore CNR

• VALENTIN DEDIU (Persona)
• ILARIA BERGENTI (Unità di personale interno)
• CARLO TALIANI (Persona)

Insieme di parole chiave

• Parole chiave di "Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)
• Nanostrutture Magnetiche per la Spintronica e la Nanomedicina (PM.P04.006.002) (Modulo)

Autore CNR di

• VALENTIN DEDIU (Persona)
• ILARIA BERGENTI (Unità di personale interno)
• CARLO TALIANI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)

Insieme di parole chiave di

• Parole chiave di "Valence electronic states related to Mn2+ ions at La0.7Sr0.3MnO3 surfaces characterized by resonant photoemission" (Insieme di parole chiave)