論文

査読有り 本文へのリンクあり
2020年4月

Switchable giant nonreciprocal frequency shift of propagating spin waves in synthetic antiferromagnets

Science Advances
  • Mio Ishibashi
  • ,
  • Yoichi Shiota
  • ,
  • Tian Li
  • ,
  • Shinsaku Funada
  • ,
  • Takahiro Moriyama
  • ,
  • Teruo Ono

6
17
開始ページ
eaaz6931
終了ページ
eaaz6931
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1126/sciadv.aaz6931
出版者・発行元
American Association for the Advancement of Science (AAAS)

The nonreciprocity of propagating spin waves, i.e., the difference in amplitude and/or frequency depending on the propagation direction, is essential for the realization of spin wave-based logic circuits. However, the nonreciprocal frequency shifts demonstrated so far are not large enough for applications because they originate from interfacial effects. In addition, switching of the spin wave nonreciprocity in the electrical way remains a challenging issue. Here, we show a switchable giant nonreciprocal frequency shift of propagating spin waves in interlayer exchange-coupled synthetic antiferromagnets. The observed frequency shift is attributed to large asymmetric spin wave dispersion caused by a mutual dipolar interaction between two magnetic layers. Furthermore, we find that the sign of the frequency shift depends on relative configuration of two magnetizations, based on which we demonstrate an electrical switching of the nonreciprocity. Our findings provide a route for switchable and highly nonreciprocal spin wave-based applications.

リンク情報
DOI
https://doi.org/10.1126/sciadv.aaz6931
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32494648
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85084668275&origin=inward 本文へのリンクあり
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85084668275&origin=inward
URL
https://syndication.highwire.org/content/doi/10.1126/sciadv.aaz6931
ID情報
  • DOI : 10.1126/sciadv.aaz6931
  • eISSN : 2375-2548
  • PubMed ID : 32494648
  • SCOPUS ID : 85084668275

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