In a magnetic tunnel junction, Joule heat increases the voltage-controlled magnetic anisotropy effect in the free layer and thereby pushes the amplification gain for microwaves beyond one.
This is a preview of subscription content, access via your institution
Access options
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
$29.99 / 30 days
cancel any time
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Locatelli, N., Cros, V. & Grollier, J. Nat. Mater. 13, 11–20 (2014).
Goto, M. et al. Nat. Nanotech. https://doi.org/10.1038/s41565-018-0306-9 (2018).
Slonczewski, J. C. US patent 5695864A (1997).
Kiselev, S. I. et al. Nature 425, 380–383 (2003).
Tulapurkar, A. A. et al. Nature 438, 339–342 (2005).
Xue, L. et al. Appl. Phys. Lett. 99, 022505 (2011).
Maruyama, T. et al. Nat. Nanotech. 4, 158–161 (2009).
Wang, K. L. et al. Proc. IEEE 104, 1974–2008 (2016).
Böhnert, T. et al. Phys. Rev. B 95, 104441 (2017).
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Shao, Q., Wang, K.L. Heat-assisted microwave amplifier. Nature Nanotech 14, 9–11 (2019). https://doi.org/10.1038/s41565-018-0313-x
Published:
Issue Date:
DOI: https://doi.org/10.1038/s41565-018-0313-x