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

Marek Wilhelm; Margret Giesen; Tomáš Duchoň; Marco Moors; David N. Mueller; Johanna Hackl; Christoph Baeumer; Mai Hussein Hamed; Lei Cao; Hengbo Zhang; Oleg Petracic; Maria Glöß; Stefan Cramm; Slavomír Nemšák; Carsten Wiemann; Regina Dittmann; Claus M. Schneider; Martina Müller

doi:10.1063/5.0022150

Photoemission electron microscopy of magneto-ionic effects in La_0.7Sr_0.3MnO₃

Marek Wilhelm^*, Margret Giesen, Tomáš Duchoň, Marco Moors, David N. Mueller, Johanna Hackl, Christoph Baeumer, Mai Hussein Hamed, Lei Cao, Hengbo Zhang, Oleg Petracic, Maria Glöß, Stefan Cramm, Slavomír Nemšák, Carsten Wiemann, Regina Dittmann, Claus M. Schneider, Martina Müller

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

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 La0.7Sr0.3MnO3 (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.

Original language	English
Article number	111102
Journal	APL materials
Volume	8
Issue number	11
DOIs	https://doi.org/10.1063/5.0022150
Publication status	Published - 1 Nov 2020
Externally published	Yes

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Wilhelm-2020-Photoemission-electron-microscopy-oFinal published version, 3.65 MBLicence: CC BY

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Wilhelm, M., Giesen, M., Duchoň, T., Moors, M., Mueller, D. N., Hackl, J., Baeumer, C., Hamed, M. H., Cao, L., Zhang, H., Petracic, O., Glöß, M., Cramm, S., Nemšák, S., Wiemann, C., Dittmann, R., Schneider, C. M., & Müller, M. (2020). Photoemission electron microscopy of magneto-ionic effects in La_0.7Sr_0.3MnO₃. APL materials, 8(11), Article 111102. https://doi.org/10.1063/5.0022150

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title = "Photoemission electron microscopy of magneto-ionic effects in La0.7Sr0.3MnO3",

abstract = "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 La0.7Sr0.3MnO3 (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.",

author = "Marek Wilhelm and Margret Giesen and Tom{\'a}{\v s} Ducho{\v n} and Marco Moors and Mueller, {David N.} and Johanna Hackl and Christoph Baeumer and Hamed, {Mai Hussein} and Lei Cao and Hengbo Zhang and Oleg Petracic and Maria Gl{\"o}{\ss} and Stefan Cramm and Slavom{\'i}r Nem{\v s}{\'a}k and Carsten Wiemann and Regina Dittmann and Schneider, {Claus M.} and Martina M{\"u}ller",

note = "Funding Information: This work was funded by the Deutsche Forschungsgemeinschaft (DFG) within the Grant No. SFB 917. M. Gl{\"o}{\ss} acknowledges for the support from the Emmy Noether program of the DFG. Publisher Copyright: {\textcopyright} 2020 Author(s).",

year = "2020",

month = nov,

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doi = "10.1063/5.0022150",

language = "English",

volume = "8",

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issn = "2166-532X",

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T1 - Photoemission electron microscopy of magneto-ionic effects in La0.7Sr0.3MnO3

AU - Wilhelm, Marek

AU - Giesen, Margret

AU - Duchoň, Tomáš

AU - Moors, Marco

AU - Mueller, David N.

AU - Hackl, Johanna

AU - Baeumer, Christoph

AU - Hamed, Mai Hussein

AU - Cao, Lei

AU - Zhang, Hengbo

AU - Petracic, Oleg

AU - Glöß, Maria

AU - Cramm, Stefan

AU - Nemšák, Slavomír

AU - Wiemann, Carsten

AU - Dittmann, Regina

AU - Schneider, Claus M.

AU - Müller, Martina

N1 - Funding Information: This work was funded by the Deutsche Forschungsgemeinschaft (DFG) within the Grant No. SFB 917. M. Glöß acknowledges for the support from the Emmy Noether program of the DFG. Publisher Copyright: © 2020 Author(s).

PY - 2020/11/1

Y1 - 2020/11/1

N2 - 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 La0.7Sr0.3MnO3 (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.

AB - 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 La0.7Sr0.3MnO3 (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.

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JO - APL materials

JF - APL materials

IS - 11

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ER -

Photoemission electron microscopy of magneto-ionic effects in La_0.7Sr_0.3MnO₃

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