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Raman study of the Verwey transition in magnetite thin films

Baghaie Yazdi, M. ; Choi, Kwang-Yong ; Wulferding, Dirk ; Lemmens, Peter ; Alff, Lambert (2023)
Raman study of the Verwey transition in magnetite thin films.
In: New Journal of Physics, 2013, 15 (10)
doi: 10.26083/tuprints-00020568
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Raman study of the Verwey transition in magnetite thin films
Language: English
Date: 5 December 2023
Place of Publication: Darmstadt
Year of primary publication: 2013
Place of primary publication: London
Publisher: IOP Publishing
Journal or Publication Title: New Journal of Physics
Volume of the journal: 15
Issue Number: 10
Collation: 8 Seiten
DOI: 10.26083/tuprints-00020568
Corresponding Links:
Origin: Secondary publication DeepGreen

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.

Identification Number: 103032
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-205686
Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
Divisions: 11 Department of Materials and Earth Sciences > Material Science
Date Deposited: 05 Dec 2023 10:15
Last Modified: 07 Dec 2023 12:14
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20568
PPN: 513738142
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