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Lasers Control Electronic Spin

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CAMBRIDGE, Mass., Dec. 6, 2011 — For the first time, light has proved useful in obtaining information about the spin of electrons flowing over topological insulators — a discovery that could open up possibilities for new devices based on spintronics and magnetic data storage. Topological insulators possess paradoxical properties: The 3-D bulk of the material behaves just like a conventional insulator — such as quartz or glass — which blocks the movement of electric currents, yet its outer surface behaves as an extremely good conductor, allowing electricity to flow freely. Illustration of how...Read full article

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    Published: December 2011
    3-D mappingAmericascircularly polarized laser lightCommunicationsconductivityelectromagnetic storageelectron energyelectron stateselectronic spinElectronics & Signal Analysismagnetic data storageMassachusetts Institute of TechnologyMITNuh GedikResearch & Technologyspintronicssuperconductorstopological insulatorsLasers

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