Spin-wave nonreciprocity based on interband magnonic transitions

Kai Di; Hock Siah Lim; Vanessa Li Zhang; Ser Choon Ng; Meng Hau Kuok

doi:10.1063/1.4822095

Spin-wave nonreciprocity based on interband magnonic transitions

Mesoscale and Nanoscale Physics 2015-06-16 v3

Authors: Kai Di , Hock Siah Lim , Vanessa Li Zhang , Ser Choon Ng , Meng Hau Kuok

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Abstract

We theoretically demonstrate linear spin-wave nonreciprocity in a Ni80Fe20 nanostripe waveguide, based on interband magnonic transitions induced by a time-reversal and spatialinversion symmetry breaking magnetic field. An analytical coupled-mode theory of spin waves, developed to describe the transitions which are accompanied by simultaneous frequency and wavevector shifts of the coupled spin waves, is well corroborated by numerical simulations. Our findings could pave the way for the realization of spin-wave isolation and the dynamic control of spin-wave propagation in nanoscale magnonic integrated circuits via an applied magnetic field.

Keywords

spin waves spintronics spin current

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@article{arxiv.1305.5018,
  title  = {Spin-wave nonreciprocity based on interband magnonic transitions},
  author = {Kai Di and Hock Siah Lim and Vanessa Li Zhang and Ser Choon Ng and Meng Hau Kuok},
  journal= {arXiv preprint arXiv:1305.5018},
  year   = {2015}
}

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14 pages and 3 figures

Spin-wave nonreciprocity based on interband magnonic transitions

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