The manipulation of electronic spins — 'spintronics' — might be the basis of future device technology. A subtle relativistic effect offers a way to flip spins inside a semiconducting material.
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Flatté, M. Relativity on a chip. Nature 427, 21–22 (2004). https://doi.org/10.1038/427021a
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DOI: https://doi.org/10.1038/427021a