Walke, P. ; Gupta, S. ; Li, Q.R. ; Major, M. ; Donner, Wolfgang ; Mercey, B. ; Lüders, U. (2018)
The role of oxygen vacancies on the weak localization in LaNiO3-δ epitaxial thin films.
In: Journal of Physics and Chemistry of Solids, 123
doi: 10.1016/j.jpcs.2018.07.003
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report on the analysis of weak localization observed in epitaxial films of LaNiO3-δ deposited coherently on SrTiO3 (001) substrates using different oxygen pressures, controlling thus the oxygen stoichiometry δ. The structural and transport properties of 10 nm thick LaNiO3-δ films were investigated. In the films deposited under the lowest oxygen pressures, we observe localization effects at low temperatures, indicating first a high structural quality of the films, and second an influence of the growth conditions on the quantum transport properties of the nickelate. We will discuss the origin as well as the dimensionality of this effect, giving insight into novel and accurate strategies for the design of ultrathin LaNiO3 electrodes for improved next generation electronics devices.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Walke, P. ; Gupta, S. ; Li, Q.R. ; Major, M. ; Donner, Wolfgang ; Mercey, B. ; Lüders, U. |
| Art des Eintrags: | Bibliographie |
| Titel: | The role of oxygen vacancies on the weak localization in LaNiO3-δ epitaxial thin films |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2018 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics and Chemistry of Solids |
| Jahrgang/Volume einer Zeitschrift: | 123 |
| DOI: | 10.1016/j.jpcs.2018.07.003 |
| URL / URN: | https://doi.org/10.1016/j.jpcs.2018.07.003 |
| Kurzbeschreibung (Abstract): | We report on the analysis of weak localization observed in epitaxial films of LaNiO3-δ deposited coherently on SrTiO3 (001) substrates using different oxygen pressures, controlling thus the oxygen stoichiometry δ. The structural and transport properties of 10 nm thick LaNiO3-δ films were investigated. In the films deposited under the lowest oxygen pressures, we observe localization effects at low temperatures, indicating first a high structural quality of the films, and second an influence of the growth conditions on the quantum transport properties of the nickelate. We will discuss the origin as well as the dimensionality of this effect, giving insight into novel and accurate strategies for the design of ultrathin LaNiO3 electrodes for improved next generation electronics devices. |
| Freie Schlagworte: | Weak localization, Epitaxial film, Stoichiometry, Quantum transport |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung |
| Hinterlegungsdatum: | 17 Jan 2019 08:37 |
| Letzte Änderung: | 14 Sep 2020 08:52 |
| PPN: | |
| Sponsoren: | . W. acknowledges a Marie Curie Initial Training Network Experienced Researcher Fellowship within the 7th European Community Framework Programme (SOPRANO project) and SERB-YSS/2015/001937 (Fast track young scientist research scheme) for financial support., Q-R. L. appreciates the financial support from Conseil Regional de Basse Normandie within the framework of International Doctoral School in Functional Materials (IDS FunMat). |
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