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Heat-assisted microwave amplifier

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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.

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Fig. 1: Three types of existing microwave applications based on magnetic tunnel junctions (MTJs).

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, USA

    Qiming Shao & Kang L. Wang

  2. Department of Materials Science and Engineering, University of California, Los Angeles, CA, USA

    Kang L. Wang

  3. Department of Physics and Astronomy, University of California, Los Angeles, CA, USA

    Kang L. Wang

Authors
  1. Qiming Shao
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  2. Kang L. Wang
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Correspondence to Qiming Shao or Kang L. Wang.

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Shao, Q., Wang, K.L. Heat-assisted microwave amplifier. Nature Nanotech 14, 9–11 (2019). https://doi.org/10.1038/s41565-018-0313-x

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