Antiferromagnonic Spin Transport from Y$_3$Fe$_5$O$_{12}$ into NiO

Hailong Wang; Chunhui Du; P. Chris Hammel; Fengyuan Yang

doi:10.1103/PhysRevLett.113.097202

Antiferromagnonic Spin Transport from Y$_3$Fe$_5$O$_{12}$ into NiO

Materials Science 2015-09-16 v1

Authors: Hailong Wang , Chunhui Du , P. Chris Hammel , Fengyuan Yang

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Abstract

We observe highly efficient dynamic spin injection from Y $_3$ Fe $_5$ O $_{12}$ (YIG) into NiO, an antiferromagnetic (AF) insulator, via strong coupling, and robust spin propagation in NiO up to 100-nm thickness mediated by its AF spin correlations. Strikingly, the insertion of a thin NiO layer between YIG and Pt significantly enhances the spin currents driven into Pt, suggesting exceptionally high spin transfer efficiency at both YIG/NiO and NiO/Pt interfaces. This offers a powerful platform for studying AF spin pumping and AF dynamics as well as for exploration of spin manipulation in tailored structures comprising metallic and insulating ferromagnets, antiferromagnets and nonmagnetic materials.

Keywords

antiferromagnonic spin transport yttrium iron garnet nickel oxide spin injection spin pumping antiferromagnetic dynamics spin transfer efficiency

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@article{arxiv.1509.04337,
  title  = {Antiferromagnonic Spin Transport from Y$_3$Fe$_5$O$_{12}$ into NiO},
  author = {Hailong Wang and Chunhui Du and P. Chris Hammel and Fengyuan Yang},
  journal= {arXiv preprint arXiv:1509.04337},
  year   = {2015}
}

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17 pages, 4 figures

Antiferromagnonic Spin Transport from Y$_3$Fe$_5$O$_{12}$ into NiO

Abstract

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