CNR ExploRA

Articolo in rivista, 2014, ENG, 10.1021/jp5026619

A Combined Ion Scattering, Photoemission, and DFT Investigation on the Termination Layer of a La0.7Sr0.3MnO3 Spin Injecting Electrode

Poggini, L. and Ninova, S. and Graziosi, P. and Mannini, M. and Lanzilotto, V. and Cortigiani, B. and Malavolti, L. and Borgatti, F. and Bardi, U. and Totti, F. and Bergenti, I. and Dediu, V. A. and Sessoli, R.

Mannini, M (Reprint Author), Univ Firenze, Dept Chem U Schiff, Via Lastruccia 3, I-50019 Florence, Italy. Poggini, L.; Ninova, S.; Mannini, M.; Lanzilotto, V.; Cortigiani, B.; Malavolti, L.; Bardi, U.; Totti, F.; Sessoli, R., Univ Firenze, Dept Chem U Schiff, I-50019 Florence, Italy. Poggini, L.; Ninova, S.; Mannini, M.; Lanzilotto, V.; Cortigiani, B.; Malavolti, L.; Bardi, U.; Totti, F.; Sessoli, R., INSTM RU Firenze, I-50019 Florence, Italy. Graziosi, P., Univ Politecn Valencia, Inst Tecnol Mat, Valencia 46022, Spain. Borgatti, F.; Bergenti, I.; Dediu, V. A., CNR ISMN, I-40129 Bologna, Italy.

La0.7SrO3MnO3 (LSMO) thin films have proven to act as an efficient spin injection electrode in hybrid organic/inorganic spintronic devices. Optimal control of the chemical composition of the LSMO outermost layer is a key issue in the realization of efficient and reproducible spintronic devices. Low-energy ion scattering (LEIS) and X-ray photoelectron spectroscopy (XPS), empowered by density functional theory (DFT) investigations have been used to reveal the chemical composition of the LSMO termination. The topmost layers consist of a Sr- and Mn-rich phase evolving to the bulk phase via a gradual increase of the La content.

Journal of physical chemistry. C 118 (25), pp. 13631–13637