A combined ion scattering, photoemission, and DFT investigation on the termination layer of a La0.7Sr0.3MnO3 spin injecting electrode
- Poggini, L.
- Ninova, S.
- Graziosi, P.
- Mannini, M.
- Lanzilotto, V.
- Cortigiani, B.
- Malavolti, L.
- Borgatti, F.
- Bardi, U.
- Totti, F.
- Bergenti, I.
- Dediu, V. A.
- Sessoli, R.
DOIAbstract
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
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