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. 2014 Apr 30;5:3768. doi: 10.1038/ncomms4768

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A spin current is generated by spin pumping at the FM–NM interface (grey arrows). The time-dependent spin polarization of this current (indicated as purple arrow) rotates almost entirely in the y–z plane. The small time-averaged d.c. component (yellow arrow) appears along the x axis. Due to the inverse spin Hall effect both components lead to charge currents in NM and can be converted into a.c. and d.c. voltages by placing probes along the x and y directions, respectively.