Large Spin Pumping from Epitaxial Y3Fe5O12 Thin Films to Pt and W Layers

H. L. Wang; C. H. Du; Y. Pu; R. Adur; P. C. Hammel; F. Y. Yang

doi:10.1103/PhysRevB.88.100406

Large Spin Pumping from Epitaxial Y3Fe5O12 Thin Films to Pt and W Layers

Materials Science 2014-05-20 v1

Authors: H. L. Wang , C. H. Du , Y. Pu , R. Adur , P. C. Hammel , F. Y. Yang

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Abstract

Epitaxial Y3Fe5O12 thin films have been deposited by off-axis sputtering, which exhibit excellent crystalline quality, enabling observation of large spin pumping signals in Pt/Y3Fe5O12 and W/Y3Fe5O12 bilayers driven by cavity ferromagnetic resonance. The inverse spin Hall voltages reach 2.10 mV and -5.26 mV in 5-mm long Pt/Y3Fe5O12 and W/Y3Fe5O12 bilayers, respectively, excited by a radio-frequency magnetic field of 0.3 Oe. From the ferromagnetic resonance linewidth broadening, the interfacial spin mixing conductance of 4.56E14 {\Omega}-1m-2 and 2.30E14 {\Omega}-1m-2 are obtained for Pt/Y3Fe5O12 and W/Y3Fe5O12 bilayers, respectively.

Keywords

spin pumping Y3Fe5O12 inverse spin Hall effect ferromagnetic resonance spin mixing conductance epitaxial thin films

Cite

@article{arxiv.1307.1172,
  title  = {Large Spin Pumping from Epitaxial Y3Fe5O12 Thin Films to Pt and W Layers},
  author = {H. L. Wang and C. H. Du and Y. Pu and R. Adur and P. C. Hammel and F. Y. Yang},
  journal= {arXiv preprint arXiv:1307.1172},
  year   = {2014}
}

Comments

20 pages 4 figures

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