Baghaie Yazdi, M. ; Choi, K.-Y. ; Wulferding, D. ; Lemmens, P. ; Alff, L. (2013)
Raman study of the Verwey transition in magnetite thin films.
In: New Journal of Physics, 15 (10)
doi: 10.1088/1367-2630/15/10/103032
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We have grown epitaxial thin films of magnetite on MgO and Al2O3 substrates with sharp and distinct signatures of the Verwey transition in resistivity and magnetization. We have used Raman scattering to separate the footprint of purely structural changes from the effect of additional charge and orbital order. Raman modes related to the structural phase transition occur first at temperatures above the Verwey transition temperature. In contrast, newly emerging modes indicating additional charge and orbital order appear at the Verwey transition. These results suggest that the completion of the structural phase transition in magnetite is a necessary precursor triggering a transition into a complex charge and orbitally ordered state.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Baghaie Yazdi, M. ; Choi, K.-Y. ; Wulferding, D. ; Lemmens, P. ; Alff, L. |
| Art des Eintrags: | Bibliographie |
| Titel: | Raman study of the Verwey transition in magnetite thin films |
| Sprache: | Englisch |
| Publikationsjahr: | 2013 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Physics |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1088/1367-2630/15/10/103032 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We have grown epitaxial thin films of magnetite on MgO and Al2O3 substrates with sharp and distinct signatures of the Verwey transition in resistivity and magnetization. We have used Raman scattering to separate the footprint of purely structural changes from the effect of additional charge and orbital order. Raman modes related to the structural phase transition occur first at temperatures above the Verwey transition temperature. In contrast, newly emerging modes indicating additional charge and orbital order appear at the Verwey transition. These results suggest that the completion of the structural phase transition in magnetite is a necessary precursor triggering a transition into a complex charge and orbitally ordered state. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten |
| Hinterlegungsdatum: | 09 Jan 2014 09:36 |
| Letzte Änderung: | 06 Dez 2023 08:56 |
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Raman study of the Verwey transition in magnetite thin films. (deposited 05 Dez 2023 10:15)
- Raman study of the Verwey transition in magnetite thin films. (deposited 09 Jan 2014 09:36) [Gegenwärtig angezeigt]
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