Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique

D. Fang; H. Kurebayashi; J. Wunderlich; K. Vyborny; L. P. Zarbo; R. P. Campion; A. Casiraghi; B. L. Gallagher; T. Jungwirth; A. J. Ferguson

doi:10.1038/nnano.2011.68

Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique

Mesoscale and Nanoscale Physics 2015-05-20 v1

Authors: D. Fang , H. Kurebayashi , J. Wunderlich , K. Vyborny , L. P. Zarbo , R. P. Campion , A. Casiraghi , B. L. Gallagher , T. Jungwirth , A. J. Ferguson

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Abstract

We demonstrate a scalable new ferromagnetic resonance (FMR) technique based on the spin-orbit interaction. An alternating current drives FMR in uniform ferromagnetic structures patterned from the dilute magnetic semiconductors (Ga,Mn)As and (Ga,Mn)(As,P). This allows the direct measurement of magnetic anisotropy coefficients and damping parameters for individual nano-bars. By analysing the ferromagnetic resonance lineshape, we perform vector magnetometry on the current-induced driving field, observing contributions with symmetries of both the Dresselhaus and Rashba spin-orbit interactions.

Keywords

magnetic resonance spin current magnetic nanoparticles

Cite

@article{arxiv.1012.2397,
  title  = {Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique},
  author = {D. Fang and H. Kurebayashi and J. Wunderlich and K. Vyborny and L. P. Zarbo and R. P. Campion and A. Casiraghi and B. L. Gallagher and T. Jungwirth and A. J. Ferguson},
  journal= {arXiv preprint arXiv:1012.2397},
  year   = {2015}
}

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Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique

Abstract

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