Voltage generation by ferromagnetic resonance
Xuhui Wang, Gerrit E. W. Bauer, Bart J. van Wees, Arne Brataas,, Yaroslav Tserkovnyak
TL;DR
This paper demonstrates that ferromagnetic resonance can generate a measurable dc voltage at a normal-metal contact, providing a simple method to electrically detect magnetization dynamics in ferromagnets.
Contribution
It introduces a novel mechanism linking ferromagnetic resonance to dc voltage generation at normal-metal contacts, enabling easier electrical detection of magnetization precession.
Findings
Dc voltage is generated during ferromagnetic resonance.
The voltage detection method is simple and effective.
The mechanism involves spin-flip scattering at the contact.
Abstract
A ferromagnet can resonantly absorbs rf radiation to sustain a steady precession of the magnetization around an internal or applied magnetic field. We show that under these ferromagnetic resonance (FMR) conditions, a dc voltage is generated at a normal-metal electric contact to a ferromagnet with spin-flip scattering. This mechanism allows an easy electric detection of magnetization dyamics.
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