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Lasers Used to Generate Electron Spin Currents

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CHAMPAIGN, Ill., and EINDHOVEN, Netherlands, July 11, 2014 — Ultrashort laser pulses are being used to advance research into electron spin currents, a potential field for next-generation data storage. Electron spin, or angular momentum, is typically random and therefore produces no spin current, which is key to operating spintronic devices. Spin currents can be driven by differences in voltage across a structure, but two separate studies show this is not necessarily the only — or even the most efficient — method. Ultrafast laser light creates heat transport through a ferromagnet, producing an electron spin current. Courtesy of...Read full article

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    Published: July 2014
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    AmericasCommunicationsdata storageEindhoven University of TechnologyelectronsEuropeferromagnetIllinoisinformation processingmagnetizationnanonanodevicesNetherlandsphononspicosecondResearch & Technologyspintronic devicesultrafast lasersUniversity of Illinois at Urbana-Champaignspin currentspin-angular momentummagnonsGyung-Min ChoiSjors SchellekensLasers

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