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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2016

Precessional magnetization switching by a surface acoustic wave

Résumé

Precessional 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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Dates et versions

hal-01438602 , version 1 (17-01-2017)

Identifiants

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L. Thevenard, I S Camara, S Majrab, Mathieu Bernard, P Rovillain, et al.. Precessional magnetization switching by a surface acoustic wave. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016, 93, pp.134430. ⟨10.1103/PhysRevB.93.134430⟩. ⟨hal-01438602⟩
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