Thursday, 19 April 2012

FM resonance detection through thermoelectric effecet

Thermoelectric Detection of Ferromagnetic Resonance of a Nanoscale Ferromagnet.
F. L. Bakker,* J. Flipse, A. Slachter, D. Wagenaar, and B. J. van Wees
Phys. Rev. Lett. 108, 167602 (2012)
(a) Series of Seebeck voltage versus magnetic field measurements for 11 different frequencies. The traces are offset by 150 nV for clarity. Because of the modulation technique using two driving frequencies that are 5 GHz apart, peaks and dips are observed at the resonance fields for both frequencies. (b) Frequency versus the magnetic field at the center of the resonance peak. The line corresponds to a fit of the Kittel equation. (c) Generated power and corresponding Seebeck voltage calculated using Eq. (5) and thermoelectric finite-element modeling for multiple frequencies. The measured peak heights of (a) are indicated by the black dots.

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