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

Abstract

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.

3 pages, 4 figures

References in corpus (4)

• Realization of XNOR and NAND spin-wave logic gates
• Spin pumping by parametrically excited exchange magnons
• Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
• Temporal behavior of the inverse spin Hall voltage in a magnetic insulator-nonmagnetic metal structure

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