Article thumbnail
Location of Repository

Direct observation of dynamic modes excited in a magnetic insulator by pure spin current

By V. Demidov, M. Evelt, V. Bessonov, S. Demokritov, J. Prieto, M. Munoz, J. Ben Youssef, V. Naletov, G. De Loubens, Olivier Klein, M. Collet, P. Bortolotti, V. Cros and A. Anane

Abstract

International audienceExcitation of magnetization dynamics by pure spin currents has been recently recognized as an enabling mechanism for spintronics and magnonics, which allows implementation of spin-torque devices based on low-damping insulating magnetic materials. Here we report the first spatially-resolved study of the dynamic modes excited by pure spin current in nanometer-thick microscopic insulating Yttrium Iron Garnet disks. We show that these modes exhibit nonlinear self-broadening preventing the formation of the self-localized magnetic bullet, which plays a crucial role in the stabilization of the single-mode magnetization oscillations in all-metallic systems. This peculiarity associated with the efficient nonlinear mode coupling in low-damping materials can be among the main factors governing the interaction of pure spin currents with the dynamic magnetization in high-quality magnetic insulators

Topics: [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]
Publisher: 'Springer Science and Business Media LLC'
Year: 2016
DOI identifier: 10.1038/srep32781
OAI identifier: oai:HAL:hal-02065897v1
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://hal.archives-ouvertes.... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.