The spin Seebeck effect has hitherto relied on a temperature gradient in a magnetic system to generate an electric current based on the intrinsic spin of electrons. It has now been demonstrated in a non-magnetic material. See Letter p.210
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Heikkilä, T., Tserkovnyak, Y. Thermal spin power without magnets. Nature 487, 180–181 (2012). https://doi.org/10.1038/487180a
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DOI: https://doi.org/10.1038/487180a