Coherent elastic excitation of spin waves

Akashdeep Kamra, Hedyeh Keshtgar, Peng Yan, Gerrit E.W. Bauer

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We model the injection of elastic waves into a ferromagnetic film (F) by a nonmagnetic transducer (N). We compare the configurations in which the magnetization is normal and parallel to the wave propagation. The lack of axial symmetry in the former results in the emergence of evanescent interface states. We compute the energy-flux transmission across the N|F interface and sound-induced magnetization dynamics in the ferromagnet. We predict efficient acoustically induced pumping of spin current into a metal contact attached to F.

Original languageEnglish
Article number104409
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number10
DOIs
Publication statusPublished - 2015 Mar 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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