Spin-wave interference patterns created by spin-torque nano-oscillators for memory and computation

Ferran Macià, Andrew D. Kent, Frank C. Hoppensteadt

    Research output: Contribution to journalArticle

    Abstract

    Magnetization dynamics in nanomagnets has attracted broad interest since it was predicted that a dc current flowing through a thin magnetic layer can create spin-wave excitations. These excitations are due to spin momentum transfer, a transfer of spin angular momentum between conduction electrons and the background magnetization, that enables new types of information processing. Here we show how arrays of spin-torque nano-oscillators can create propagating spin-wave interference patterns of use for memory and computation. Memristic transponders distributed on the thin film respond to threshold tunnel magnetoresistance values, thereby allowing spin-wave detection and creating new excitation patterns. We show how groups of transponders create resonant (reverberating) spin-wave interference patterns that may be used for polychronous wave computation and information storage.

    Original languageEnglish (US)
    Article number095301
    JournalNanotechnology
    Volume22
    Issue number9
    DOIs
    StatePublished - Mar 4 2011

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering
    • Electrical and Electronic Engineering

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