DataVXNanoscalePaper
journal article·2022Open access

Electric field writing and erasing of skyrmions in magnetoelectric Cu 2 OSeO 3 with an ultralow energy barrier

Ping Huang, Marco Cantoni, Arnaud Magrez, Fabrizio Carbone, Henrik M. Rønnow

Nanoscale· Volume 14· Issue 44
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Source abstract

Abstract

Skyrmions are chiral magnetic textures with non-trivial topology, and due to their unique properties they are widely considered as promising information carriers in novel magnetic storage applications. While electric field writing/erasing and manipulation of skyrmions have been recently achieved, quantitative insights into the energetics of those phenomena remain scarce. Here, we report our in situ electric field writing/erasing of skyrmions in magnetoelectric helimagnet Cu2OSeO3 utilizing real-space and real-time Lorentz transmission electron macroscopy. Through the quantitavie analysis on our massive video data, we obtained a linear dependence of the number of skyrmions on the amplitude of the applied electric field, from which a local energy barried to write/erase skyrmions is estimated to be per skyrmion. Such an ultralow energy barrier implies the potential of precise control of skyrmions in future spintronics applications.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Copper-based nanomaterials and applications · Magnetic properties of thin films · ZnO doping and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, , CN-710049 Xi'an, China

Laboratory for Quantum Magnetism (LQM), Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Laboratory for Ultrafast Microscopy and Electron Scattering (LUMES), Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Centre Interdisciplinaire de Microscopie Électronique (CIME), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Crystal Growth Facility, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Funding

Xi’an Jiaotong University · National Natural Science Foundation of China · Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung · H2020 European Research Council

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