Strong Interlayer Magnon-Magnon Coupling in Magnetic Metal-Insulator Hybrid Nanostructures

Jilei Chen, Chuanpu Liu, Tao Liu, Yang Xiao, Ke Xia, Gerrit E.W. Bauer, Mingzhong Wu, Haiming Yu

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We observe strong interlayer magnon-magnon coupling in an on-chip nanomagnonic device at room temperature. Ferromagnetic nanowire arrays are integrated on a 20-nm-thick yttrium iron garnet (YIG) thin film strip. Large anticrossing gaps up to 1.58 GHz are observed between the ferromagnetic resonance of the nanowires and the in-plane standing spin waves of the YIG film. Control experiments and simulations reveal that both the interlayer exchange coupling and the dynamical dipolar coupling contribute to the observed anticrossings. The coupling strength is tunable by the magnetic configuration, allowing the coherent control of magnonic devices.

Original languageEnglish
Article number217202
JournalPhysical Review Letters
Volume120
Issue number21
DOIs
Publication statusPublished - 2018 May 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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