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Magnetism and spin

Magnetism and spin

Spin valve uses coupled quantum dots and tiny magnetic fields

14 Sep 2020 Daisy Shearer 
Spin valve
Spin device: in this diagram of the spin valve the nanowire runs between a source and drain (both shown in gold) and the locations of the two quantum dots on the nanowire are denoted by the dashed ellipses. The brown bars are nanomagnets and the white arrows show their magnetizations. In this example, spin-up electrons can travel across the nanowire whilst spin-down electrons cannot. (Courtesy: University of Basel Department of Physics)
Researchers in Switzerland and Italy have developed a method for generating currents of electrons wi

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Daisy Shearer is a PhD student contributor to Physics World. Daisy is studying experimental physics at the University of Surrey's Advanced Technology Institute. Find out more about our student contributor networks
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