Magneto-ionic control of magnetism using a solid-state proton pump
Name
s41563-018-0211-5.pdf
Description
Accepted version
Size
1.84 MB
Format
Adobe PDF
Checksum (MD5)
c246d886bc4f9ae986a6b36cb08addfe
Author(s)
Tan, Aik Jun
Huang, Mantao
Avci, Can Onur
Büttner, Felix
Mann, Maxwell
Hu, Wen
Mazzoli, Claudio
Wilkins, Stuart
Tuller, Harry L
Beach, Geoffrey SD
Date Issued
2019
Journal
Nature Materials
Publisher
Springer Science and Business Media LLC
Version
Author's final manuscript
Abstract
© 2018, The Author(s), under exclusive licence to Springer Nature Limited. Voltage-gated ion transport as a means of manipulating magnetism electrically could enable ultralow-power memory, logic and sensor technologies. Earlier work made use of electric-field-driven O 2− displacement to modulate magnetism in thin films by controlling interfacial or bulk oxidation states. However, elevated temperatures are required and chemical and structural changes lead to irreversibility and device degradation. Here we show reversible and non-destructive toggling of magnetic anisotropy at room temperature using a small gate voltage through H + pumping in all-solid-state heterostructures. We achieve 90° magnetization switching by H + insertion at a Co/GdO x interface, with no degradation in magnetic properties after >2,000 cycles. We then demonstrate reversible anisotropy gating by hydrogen loading in Pd/Co/Pd heterostructures, making metal–metal interfaces susceptible to voltage control. The hydrogen storage metals Pd and Pt are high spin–orbit coupling materials commonly used to generate perpendicular magnetic anisotropy, Dzyaloshinskii–Moriya interaction, and spin–orbit torques in ferromagnet/heavy-metal heterostructures. Thus, our work provides a platform for voltage-controlled spin–orbitronics.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/S41563-018-0211-5
