Spin wave propagation and spin polarized electron transport in single crystal iron films

Olga Gladii; David Halley; Yves Henry; Matthieu Bailleul

doi:10.1103/PhysRevB.96.174420

Spin wave propagation and spin polarized electron transport in single crystal iron films

Materials Science 2017-11-22 v1 Mesoscale and Nanoscale Physics

Authors: Olga Gladii , David Halley , Yves Henry , Matthieu Bailleul

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Abstract

The technique of propagating spin wave spectroscopy is applied to a 20 nm thick Fe/MgO (001) film. The magnetic parameters extracted from the position of the resonance peaks are very close to those tabulated for bulk iron. From the propagating waveforms, a group velocity of 4 km/s and an attenuation length of about 6 micrometers are extracted for 1.6 micrometers-wavelength spin-wave at 18 GHz. From the measured current-induced spin-wave Doppler shift, we also extract a surprisingly high degree of spin-polarization of the current of 83%. This set of results makes single-crystalline iron a promising candidate for building devices utilizing high frequency spin-waves and spin-polarized currents.

Keywords

spin wave propagation spin polarized transport single crystal iron films propagating spin wave spectroscopy group velocity attenuation length spin-wave Doppler shift

Cite

@article{arxiv.1704.02217,
  title  = {Spin wave propagation and spin polarized electron transport in single crystal iron films},
  author = {Olga Gladii and David Halley and Yves Henry and Matthieu Bailleul},
  journal= {arXiv preprint arXiv:1704.02217},
  year   = {2017}
}

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5 figures, submitted to Phys. Rev. B

Spin wave propagation and spin polarized electron transport in single crystal iron films

Abstract

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