Studies of Gilbert magnetization damping in NiFe/organometallic trihalide perovskite bilayers investigated by broadband ferromagnetic resonance

ORAL

Abstract

Organo-metallic trihalide perovskites (OTP) have recently been suggested as promising candidates for spintronics applications, motivated by the presence of strong spin-orbit coupling, and recent studies of spin dynamics in CH$_3$NH$_3$PbI$_3$. To help elucidate the spin transport properties in these materials, we have studied the Gilbert magnetization damping parameter in NiFe ferromagnetic films related to spin-pumping into adjacent OTP layers under ferromagnetic resonance (FMR) excitation conditions, using a broadband FMR detection system. We found an increase of the damping parameter associated with spin-pumping into the OTP. The obtained thickness-dependent results are compared to those of NiFe/Cu and NiFe/Pt bilayer structures, where spin transport characteristics are well-known.

*Research sponsored by the DOE, Office of Science, grant DE-SC0014579

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Authors

  • Matthew Groesbeck

    • University of Utah Dept. of Physics and Astronomy

  • Dali Sun

    • University of Utah Dept. of Physics and Astronomy
    • University of Utah
    • Univ of Utah

  • Ryan McLaughlin

    • University of Utah
    • University of Utah Dept. of Physics and Astronomy

  • Chuang Zhang

    • University of Utah Dept. of Physics and Astronomy
    • University of Utah
    • Univ of Utah

  • Haoliang Liu

    • University of Utah Dept. of Physics and Astronomy

  • Z. Valy Vardeny

    • University of Utah Dept. of Physics and Astronomy
    • University of Utah
    • Univ of Utah