Direct detection of magnon spin transport by the inverse spin Hall effect

Details Direct detection of magnon spin transport by the inverse spin Hall effect Direct detection of magnon spin transport by the inverse spin Hall effect

2011-12-21

arxiv.org/abs/1112.4969v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures

Scientific paper

Conversion of traveling magnons into an electron carried spin current is demonstrated in a time resolved experiment using a spatially separated inductive spin-wave source and an inverse spin Hall effect (ISHE) detector. A short spin-wave packet is excited in a yttrium-iron garnet (YIG) waveguide by a microwave signal and is detected at a distance of 3 mm by an attached Pt layer as a delayed ISHE voltage pulse. The delay in the detection appears due to the finite spin-wave group velocity and proves the magnon spin transport. The experiment suggests utilization of spin waves for the information transfer over macroscopic distances in spintronic devices and circuits.

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