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Probing strong magnon-magnon coupling in a magnonic hybrid system

ORAL

Abstract

Magnon based hybrid systems have attracted increasing interest due to their potential application in coherent information processing. We demonstrate electrical and optical detection of hybrized magnon-magnon dynamics in exchange-coupled nm-thick yttrium iron garnet/permalloy (YIG/Py) bilayer devices using spin rectification and Brillouin light scattering at room temperature.  The  uniform mode in  the  conductive  Py  layer  and  the first perpendicular standing spin-wave modes in the insulating YIG layer are coupled through interfacial exchange. We observe a magnon-magnon coupling strength of 9 mT for YIG(84 nm)/Py(10 nm). The introduction of a thin insulating SiO$_2$ layer between YIG and Py strongly suppresses the hybrid dynamics. Our work explores hybrid magnonic dynamics that are important in the implementation of coherent data processing.

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Presenters

  • Dinesh Wagle

    Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States, University of Delaware

Authors

  • Dinesh Wagle

    Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States, University of Delaware

  • Yi Li

    Argonne National Laboratory

  • Authur Suits

    Princeton University, Aalto University, U.S. Naval Research Laboratory, Louisiana State University, University of South Florida, DBIO, Boston College, QCD Labs, Aalto University, DMP, Univeristy of Chicago, University of California, Berkeley, University of Delaware, University of Missouri

  • Sergi Lendinez

    University of Delaware, Nanofabrication Facility, Louisiana State University, Baton Rouge, LA 70806, United States, Louisiana State University

  • Mohammad Tomal Hossain

    University of Delaware

  • Valentyn Novosad

    Argonne National Laboratory

  • Matthias Benjamin Jungfleisch

    University of Delaware, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States