Variable spin-charge conversion across metal-insulator transition
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s41467-020-14388-9.pdf
Description
Published version
Size
812.56 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Safi, Taqiyyah(Taqiyyah Sariyah)
Zhang, Pengxiang.
Fan, Yabin
Guo, Zhongxun
Han, Jiahao
Rosenberg, Ethan Raphael
Ross, Caroline A.
Liu, Luqiao
Date Issued
January 2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Safi, Taqiyyah S. et al. “Variable spin-charge conversion across metal-insulator transition.” Nature Communications, 11, 1 (January 2020): 476 © 2020 The Author(s)
Version
Final published version
Abstract
The charge-to-spin conversion efficiency is a crucial parameter in determining the performance of many useful spintronic materials. Usually, this conversion efficiency is predetermined by the intrinsic nature of solid-state materials, which cannot be easily modified without invoking chemical or structural changes in the underlying system. Here we report on successful modulation of charge-spin conversion efficiency via the metal-insulator transition in a quintessential strongly correlated electron compound vanadium dioxide (VO2). By employing ferromagnetic resonance driven spin pumping and the inverse spin Hall effect measurement, we find a dramatic change in the spin pumping signal (decrease by > 80%) and charge-spin conversion efficiency (increase by five times) upon insulator to metal transition. The abrupt change in the structural and electrical properties of this material therefore provides useful insights on the spin related physics in a strongly correlated material undergoing a phase transition.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1038/S41467-020-14388-9
