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Photoemission electron microscopy of magneto-ionic effects in La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>

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Photoemission electron microscopy of magneto-ionic effects in La0.7Sr0.3MnO3

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WILHELM, Marek, Margret GIESEN, Tomáš DUCHOŇ, Marco MOORS, David N. MUELLER, Johanna HACKL, Christoph BAEUMER, Mai Hussein HAMED, Lei CAO, Martina MÜLLER, 2020. Photoemission electron microscopy of magneto-ionic effects in La0.7Sr0.3MnO3. In: APL Materials. American Institute of Physics (AIP). 8, 111102. eISSN 2166-532X. Available under: doi: 10.1063/5.0022150

@article{Wilhelm2020Photo-52386, title={Photoemission electron microscopy of magneto-ionic effects in La0.7Sr0.3MnO3}, year={2020}, doi={10.1063/5.0022150}, volume={8}, journal={APL Materials}, author={Wilhelm, Marek and Giesen, Margret and Duchoň, Tomáš and Moors, Marco and Mueller, David N. and Hackl, Johanna and Baeumer, Christoph and Hamed, Mai Hussein and Cao, Lei and Müller, Martina}, note={Article Number: 111102} }

Giesen, Margret Müller, Martina Moors, Marco Duchoň, Tomáš eng Hackl, Johanna 2021-01-13T15:43:00Z Cao, Lei Moors, Marco 2021-01-13T15:43:00Z Wilhelm, Marek Cao, Lei Baeumer, Christoph Photoemission electron microscopy of magneto-ionic effects in La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> Magneto-ionic control of magnetism is a promising route toward the realization of non-volatile memory and memristive devices. Magneto-ionic oxides are particularly interesting for this purpose, exhibiting magnetic switching coupled to resistive switching, with the latter emerging as a perturbation of the oxygen vacancy concentration. Here, we report on electric-field-induced magnetic switching in a La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> (LSMO) thin film. Correlating magnetic and chemical information via photoemission electron microscopy, we show that applying a positive voltage perpendicular to the film surface of LSMO results in the change in the valence of the Mn ions accompanied by a metal-to-insulator transition and a loss of magnetic ordering. Importantly, we demonstrate that the voltage amplitude provides granular control of the phenomena, enabling fine-tuning of the surface electronic structure. Our study provides valuable insight into the switching capabilities of LSMO that can be utilized in magneto-ionic devices. Hamed, Mai Hussein Mueller, David N. Baeumer, Christoph Attribution 4.0 International Mueller, David N. Hackl, Johanna Müller, Martina Duchoň, Tomáš Wilhelm, Marek Hamed, Mai Hussein 2020 Giesen, Margret

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