Actuation, propagation, and detection of transverse magnetoelastic waves in ferromagnets

Akashdeep Kamra, Gerrit E.W. Bauer

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We study propagation of ultrasonic waves through a ferromagnetic medium with special attention to the boundary conditions at the interface with an ultrasonic actuator. In analogy to charge and spin transport in conductors, we formulate the energy transport through the system as a scattering problem. We find that the magneto-elastic coupling leads to a non-vanishing magnetic (elastic) energy accompanying the acoustic (spin) waves with a resonantly enhanced effect around the anti-crossing in the dispersion relations. We demonstrate the physics of excitating magnetization dynamics via acoustic waves injected around the ferromagnetic resonance frequency.

Original languageEnglish
Pages (from-to)35-39
Number of pages5
JournalSolid State Communications
Volume198
DOIs
Publication statusPublished - 2014 Nov

Keywords

  • A. Ferromagnets
  • D. Magnetoelastic coupling
  • D. Spin pumping
  • D. Ultrasound

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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