Electron sampling depth and saturation effects in perovskite films investigated by soft xray absorption spectroscopy (Articolo in rivista)

Type

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

Label

• Electron sampling depth and saturation effects in perovskite films investigated by soft xray absorption spectroscopy (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

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

• 10.1103/PhysRevB.90.125120 (literal)

Alternative label

• A. Ruosi,1 ,C. Raisch, 2 A. Verna, 3 R. Werner, 4 B. A. Davidson, 3 J. Fujii, 3 R. Kleiner, 4 and D. Koelle 4 (2014)
  Electron sampling depth and saturation effects in perovskite films investigated by soft xray absorption spectroscopy
  in Physical review. B, Condensed matter and materials physics
  (literal)

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

• A. Ruosi,1 ,C. Raisch, 2 A. Verna, 3 R. Werner, 4 B. A. Davidson, 3 J. Fujii, 3 R. Kleiner, 4 and D. Koelle 4 (literal)

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

• 90 (literal)

Rivista

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

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

• 12 (literal)

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

• 1 Department of Physics, University of Naples \"Federico II,\" P. Tecchio 80, 80125 Naples, Italy 2 Physikalische Chemie and Center for Light Matter Interaction, Sensors and Analytics (LISA + Universitat Tuebingen,72076 Tuebingen, Germany 3 Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali (CNR-IOM), TASC National Laboratory, AREA Science Park,3 4012 Basovizza, Trieste, Italy 4 Physikalisches Institut and Center for Collective Quantum Phenomena in LISA+, Universitat Tubingen, 72076 Tuebingen, Germany (literal)

Titolo

• Electron sampling depth and saturation effects in perovskite films investigated by soft xray absorption spectroscopy (literal)

Abstract

• Knowledge of the electron sampling depth is important for quantitative analysis of x-ray absorption spectroscopy data, yet for oxides with the perovskite structure no quantitative values are so far available. Here, we study absorption saturation in films of two of the most-studied perovskites, La0.7Ca0.3MnO3 (LCMO) and YBa2Cu3O7 (YBCO), at the L2,3 edges of Mn and Cu, respectively. By measuring the electron-yield intensity as a function of photon incidence angle and film thickness, the sampling depth d, photon attenuation length ?, and ratio ?/d have been independently determined between 50 and 300 K. The extracted sampling depth dLCMO?3 nm for LCMO films at high temperatures in the polaronic insulator state (150-300 K) is near the values reported for some transition metals (dX=1.7-2.5 nm, where X = Fe, Co, Ni) at room temperature, and it is much smaller than dYBCO?5 nm measured for YBCO films and the value previously reported for Fe3O4 (dFe3O4=4.5nm). The measured dLCMO increases to 4.5 nm when LCMO is in the metallic state at low temperatures. These results indicate that the sampling depth in oxides is strongly material dependent and can be measurably influenced by electronic phase transitions deriving from strong correlations. (literal)

Prodotto di

• OxideMBE (MD.P03.009.004) (Modulo)
• MD.P04.006.001 Transizioni di fase e proprietà magnetiche in ossidi fortemente correlati, interfacce metallo-semiconduttore, metalli anomali e superconduttori (MD.P04.006.004) (Modulo)

Autore CNR

• ADRIANO VERNA (Unità di personale esterno)
• BRUCE ANDREW DAVIDSON (Unità di personale interno)
• JUN FUJII (Unità di personale interno)

Incoming links:

Autore CNR di

• BRUCE ANDREW DAVIDSON (Unità di personale interno)
• JUN FUJII (Unità di personale interno)
• ADRIANO VERNA (Unità di personale esterno)

Prodotto

• OxideMBE (MD.P03.009.004) (Modulo)
• MD.P04.006.001 Transizioni di fase e proprietà magnetiche in ossidi fortemente correlati, interfacce metallo-semiconduttore, metalli anomali e superconduttori (MD.P04.006.004) (Modulo)

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

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