Ultrathin manganite films are widely used as active electrodes in organic spintronic devices. In this study, a scanning tunnelling microscopy (STM) investigation with atomic resolution revealed previously unknown surface features consisting of small non-stoichiometric islands. Based upon this evidence, a new mechanism for the growth of these complex materials is proposed. It is suggested that the non-stoichiometric islands result from nucleation centres that are below the critical threshold size required for stoichiometric crystalline growth. These islands represent a kinetic intermediate of single-layer growth regardless of the film thickness, and should be considered and possibly controlled in manganite thin-film applications.

Surface nanostructures in manganite films / Gambardella, A; Graziosi, P; Bergenti, I; Prezioso, M; Pullini, D; Milita, S; Biscarini, Fabio; Dediu, V. A.. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 4:(2014), pp. 5353-N/A. [10.1038/srep05353]

Surface nanostructures in manganite films

BISCARINI, FABIO;
2014

Abstract

Ultrathin manganite films are widely used as active electrodes in organic spintronic devices. In this study, a scanning tunnelling microscopy (STM) investigation with atomic resolution revealed previously unknown surface features consisting of small non-stoichiometric islands. Based upon this evidence, a new mechanism for the growth of these complex materials is proposed. It is suggested that the non-stoichiometric islands result from nucleation centres that are below the critical threshold size required for stoichiometric crystalline growth. These islands represent a kinetic intermediate of single-layer growth regardless of the film thickness, and should be considered and possibly controlled in manganite thin-film applications.
2014
4
5353
N/A
Surface nanostructures in manganite films / Gambardella, A; Graziosi, P; Bergenti, I; Prezioso, M; Pullini, D; Milita, S; Biscarini, Fabio; Dediu, V. A.. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 4:(2014), pp. 5353-N/A. [10.1038/srep05353]
Gambardella, A; Graziosi, P; Bergenti, I; Prezioso, M; Pullini, D; Milita, S; Biscarini, Fabio; Dediu, V. A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1061950
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