Effects of confinement and electron transport on magnetic switching in single Co nanoparticles

This work reports the first study of current-driven magnetization noise in a single, nanometerscale, ferromagnetic (Co) particle, attached to normal metal leads by high-resistance tunneling junctions. As the tunnel current increases at low temperature, the magnetic switching field decreases, its pro...

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Veröffentlicht in:Scientific reports 2013-02, Vol.3 (1), p.1200-1200, Article 1200
Hauptverfasser: Jiang, W., Birk, F. T., Davidović, D.
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Davidović, D.
description This work reports the first study of current-driven magnetization noise in a single, nanometerscale, ferromagnetic (Co) particle, attached to normal metal leads by high-resistance tunneling junctions. As the tunnel current increases at low temperature, the magnetic switching field decreases, its probability distribution widens, while the temperature of the environment remains nearly constant. These observations demonstrate nonequilibrium magnetization noise. A classical model of the noise is provided, where the spin-orbit interaction plays a central role in driving magnetic tunneling transitions.
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subjects 639/301/357/354
639/766/119/1001
639/925/357/1017
639/925/927/1062
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Electron transport
Humanities and Social Sciences
Low temperature
MAGNETIC DEVICES
multidisciplinary
NANOPARTICLES
NANOSCIENCE AND NANOTECHNOLOGY
Noise
Probability distribution
QUANTUM DOTS
Science
Science & Technology - Other Topics
SPINTRONICS
Temperature effects
title Effects of confinement and electron transport on magnetic switching in single Co nanoparticles
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