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Article overview
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Thermally driven microwave emission from magnetic bilayers | Yuichi Ohnuma
; Hiroto Adachi
; Eiji Saitoh
; Sadamichi Maekawa
; | Date: |
1 Sep 2015 | Abstract: | We theoretically demonstrate that a gigahertz microwave emission from a
ferromagnet/paramagnet bilayer can be driven simply by means of a temperature
bias. Employing many-body theory for investigating the effects of a phonon heat
current on the magnon lifetime, we show that a magnon instability occurs upon
the suppression of the Umklapp scattering at low temperatures, leading to
microwave emission. The present finding provides crucial information about the
interplay of spin current and heat current. | Source: | arXiv, 1509.0132 | Services: | Forum | Review | PDF | Favorites |
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