http://www.cnr.it/ontology/cnr/individuo/prodotto/ID300402
Observation of strontium segregation in LaAlO3/SrTiO3 and NdGaO3/SrTiO3 oxide heterostructures by X-ray photoemission spectroscopy (Articolo in rivista)
- Type
- Label
- Observation of strontium segregation in LaAlO3/SrTiO3 and NdGaO3/SrTiO3 oxide heterostructures by X-ray photoemission spectroscopy (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.4861797 (literal)
- Alternative label
Treske, Uwe; Heming, Nadine; Knupfer, Martin; Buechner, Bernd; Koitzsch, Andreas; Di Gennaro, Emiliano; di Uccio, Umberto Scotti; Granozio, Fabio Miletto; Krause, Stefan (2014)
Observation of strontium segregation in LaAlO3/SrTiO3 and NdGaO3/SrTiO3 oxide heterostructures by X-ray photoemission spectroscopy
in APL Materials
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Treske, Uwe; Heming, Nadine; Knupfer, Martin; Buechner, Bernd; Koitzsch, Andreas; Di Gennaro, Emiliano; di Uccio, Umberto Scotti; Granozio, Fabio Miletto; Krause, Stefan (literal)
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- Rivista
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Institute for Integrative Nanosciences (IIN); Complesso Univ Monte S Angelo; Complesso Univ Monte S Angelo; Helmholtz Association (literal)
- Titolo
- Observation of strontium segregation in LaAlO3/SrTiO3 and NdGaO3/SrTiO3 oxide heterostructures by X-ray photoemission spectroscopy (literal)
- Abstract
- LaAlO3 and NdGaO3 thin films of different thicknesses have been grown by pulsed laser deposition on TiO2-terminated SrTiO3 single crystals and investigated by soft X-ray photoemission spectroscopy. The surface sensitivity of the measurements has been tuned by varying photon energy h. and emission angle Theta. In contrast to the core levels of the other elements, the Sr 3d line shows an unexpected splitting for higher surface sensitivity, signaling the presence of a second strontium component. From our quantitative analysis we conclude that during the growth process Sr atoms diffuse away from the substrate and segregate at the surface of the heterostructure, possibly forming strontium oxide. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. (literal)
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