Li, Weiwei, Zhu, Bonan, He, Qian et al. (11 more authors) (2020) Interface Engineered Room-Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films. Advanced Science. 1901606. ISSN 2198-3844
Abstract
Ultrathin epitaxial films of ferromagnetic insulators (FMIs) with Curie temperatures near room temperature are critically needed for use in dissipationless quantum computation and spintronic devices. However, such materials are extremely rare. Here, a room-temperature FMI is achieved in ultrathin La0.9Ba0.1MnO3 films grown on SrTiO3 substrates via an interface proximity effect. Detailed scanning transmission electron microscopy images clearly demonstrate that MnO6 octahedral rotations in La0.9Ba0.1MnO3 close to the interface are strongly suppressed. As determined from in situ X-ray photoemission spectroscopy, O K-edge X-ray absorption spectroscopy, and density functional theory, the realization of the FMI state arises from a reduction of Mn eg bandwidth caused by the quenched MnO6 octahedral rotations. The emerging FMI state in La0.9Ba0.1MnO3 together with necessary coherent interface achieved with the perovskite substrate gives very high potential for future high performance electronic devices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. |
Keywords: | ABO perovskite oxides,ferromagnetic insulators,interface engineering,manganite thin films,octahedral proximity effect |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 25 Nov 2019 09:50 |
Last Modified: | 16 Oct 2024 16:13 |
Published Version: | https://doi.org/10.1002/advs.201901606 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/advs.201901606 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153850 |
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