This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1002/adfm.201808270 in citations.
Please use the identifier: http://hdl.handle.net/2128/25442 in citations.
High‐ T C Interfacial Ferromagnetism in SrMnO 3 /LaMnO 3 Superlattices
High‐ T C Interfacial Ferromagnetism in SrMnO 3 /LaMnO 3 Superlattices
Heterostructures of strongly correlated oxides demonstrate various intriguing and potentially useful interfacial phenomena. LaMnO3/SrMnO3 superlattices are presented showcasing a new high‐temperature ferromagnetic phase with Curie temperature, T C ≈360 K, caused by electron transfer from the surface...
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Personal Name(s): | Keunecke, Marius |
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Lyzwa, Fryderyk / Schwarzbach, Danny / Roddatis, Vladimir / Gauquelin, Nicolas / Müller‐Caspary, Knut / Verbeeck, Johann / Callori, Sara J. / Klose, Frank / Jungbauer, Markus / Moshnyaga, Vasily (Corresponding author) | |
Contributing Institute: |
Physik Nanoskaliger Systeme; ER-C-1 |
Published in: | Advanced functional materials, 30 (2020) 18, S. 1808270 |
Imprint: |
Weinheim
Wiley-VCH
2020
|
DOI: |
10.1002/adfm.201808270 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Link: |
Get full text Published on 2019-02-10. Available in OpenAccess from 2020-02-10. Get full text Published on 2019-02-10. Available in OpenAccess from 2020-02-10. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25442 in citations.
Heterostructures of strongly correlated oxides demonstrate various intriguing and potentially useful interfacial phenomena. LaMnO3/SrMnO3 superlattices are presented showcasing a new high‐temperature ferromagnetic phase with Curie temperature, T C ≈360 K, caused by electron transfer from the surface of the LaMnO3 donor layer into the neighboring SrMnO3 acceptor layer. As a result, the SrMnO3 (top)/LaMnO3 (bottom) interface shows an enhancement of the magnetization as depth‐profiled by polarized neutron reflectometry. The length scale of charge transfer, λTF ≈2 unit cells, is obtained from in situ growth monitoring by optical ellipsometry, supported by optical simulations, and further confirmed by high resolution electron microscopy and spectroscopy. A model of the inhomogeneous distribution of electron density in LaMnO3/SrMnO3 layers along the growth direction is concluded to account for a complex interplay between ferromagnetic and antiferromagnetic layers in superlattices. |