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Nanomagnetism

Spin doctors play with single electrons

It is now possible to prepare a semiconductor quantum dot that contains a single magnetic atom, and then add just one extra electron or 'hole' to it, opening up the possibility of a new era in spintronics.

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Figure 1: The photoluminescence signal from a quantum dot containing a single Mn atom, plotted as photon energy (y axis) versus bias voltage1.

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Erwin, S. Spin doctors play with single electrons. Nature Nanotech 1, 98–99 (2006). https://doi.org/10.1038/nnano.2006.117

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