Spin waves in micro-structured yttrium iron garnet nanometer-thick films

Matthias B. Jungfleisch; Wei Zhang; Wanjun Jiang; Houchen Chang; Joseph Sklenar; Stephen M. Wu; John E. Pearson; Anand Bhattacharya; John B. Ketterson; Mingzhong Wu; Axel Hoffmann

doi:10.1063/1.4916027

Spin waves in micro-structured yttrium iron garnet nanometer-thick films

Mesoscale and Nanoscale Physics 2015-03-26 v1 Materials Science

Authors: Matthias B. Jungfleisch , Wei Zhang , Wanjun Jiang , Houchen Chang , Joseph Sklenar , Stephen M. Wu , John E. Pearson , Anand Bhattacharya , John B. Ketterson , Mingzhong Wu , Axel Hoffmann

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We investigated the spin-wave propagation in a micro-structured yttrium iron garnet waveguide of $40$ nm thickness. Utilizing spatially-resolved Brillouin light scattering microscopy, an exponential decay of the spin-wave amplitude of $(10.06 \pm 0.83)$ $\mu$ m was observed. This leads to an estimated Gilbert damping constant of $\alpha=(8.79\pm 0.73)\times 10^{-4}$ , which is larger than damping values obtained through ferromagnetic resonance measurements in unstructured films. The theoretically calculated spatial interference of waveguide modes was compared to the spin-wave pattern observed experimentally by means of Brillouin light scattering spectroscopy.

Keywords

spin waves brillouin scattering radiation damage in silicon

Cite

@article{arxiv.1412.4032,
  title  = {Spin waves in micro-structured yttrium iron garnet nanometer-thick films},
  author = {Matthias B. Jungfleisch and Wei Zhang and Wanjun Jiang and Houchen Chang and Joseph Sklenar and Stephen M. Wu and John E. Pearson and Anand Bhattacharya and John B. Ketterson and Mingzhong Wu and Axel Hoffmann},
  journal= {arXiv preprint arXiv:1412.4032},
  year   = {2015}
}

Spin waves in micro-structured yttrium iron garnet nanometer-thick films

Abstract

Keywords

Cite

Related papers