Precessional magnetization switching by a surface acoustic wave | Zendy

L. Thevenard | Zendy; I. S. Camara | Zendy; S. Majrab | Zendy; M. Bernard | Zendy; P. Rovillain | Zendy; A. Lemaı̂tre | Zendy; C. Gourdon | Zendy; J.-Y. Duquesne | Zendy

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Precessional magnetization switching by a surface acoustic wave

Author(s) -

L. Thevenard,

I. S. Camara,

S. Majrab,

M. Bernard,

P. Rovillain,

A. Lemaı̂tre,

C. Gourdon,

J.-Y. Duquesne

Publication year - 2016

Publication title -

physical review. b./physical review. b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.78

H-Index - 465

eISSN - 2469-9969

pISSN - 2469-9950

DOI - 10.1103/physrevb.93.134430

Subject(s) - magnetostriction , precession , surface acoustic wave , magnetization , acoustics , acoustic wave , magnetic field , condensed matter physics , nonlinear system , materials science , torque , physics , surface (topology) , magnetic moment , mathematics , quantum mechanics , geometry

International audiencePrecessional switching allows subnanosecond and deterministic reversal of magnetic data bits. It relies on triggering a large-angle, highly nonlinear precession of magnetic moments around a bias field. Here we demonstrate that a surface acoustic wave (SAW) propagating on a magnetostrictive semiconducting material produces an efficient torque that induces precessional switching. This is evidenced by Kerr microscopy and acoustic behavior analysis in a (Ga,Mn)(As,P) thin film. Using SAWs should therefore allow remote and wave control of individual magnetic bits at potentially GHz frequencies

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