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1 PublikationLight control of Orbital Domains: case of the prototypical manganite La0.5Sr1.5MnO4
Miller, T.; Gensch, M.; Wall, S.
Abstract
Control of electronic and structural ordering in correlated materials on the ultrafast timescale with light is a new and emerging approach to disentangle the complex interplay of the charge, spin, orbital and structural degree of freedom. In this paper we present an overview of how orbital order and orbital domains can be controlled by near IR and THz radiation in the layered manganite La0.5Sr1.5MnO4. We show how near-IR pumping can efficiently and rapidly melt orbital ordering. However, the nanoscale domain structure recovers unchanged demonstrating the importance of structural defects for the orbital domain formation. On the contrary, we show that pulsed THz fields can be used to effectively orientate the domains. In this case the alignment depends on the in-plane electric field polarization and is induced by an energy penalty that arises from THz field induced hopping of the localized charges.
Keywords: THz control; High-field THz; TELBE; ultra-fast
Beteiligte Forschungsanlagen
- Strahlungsquelle ELBE DOI: 10.17815/jlsrf-2-58
Verknüpfte Publikationen
- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 24262) publication
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Physica Scripta 91(2016), 124002
DOI: 10.1088/0031-8949/91/12/124002
Cited 3 times in Scopus
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Permalink: https://www.hzdr.de/publications/Publ-24262