Research output: Contribution to journal › Article › peer-review
615 KB, PDF document
Journal | Physical Review B |
---|---|
Date | Accepted/In press - 20 Jul 2018 |
Date | Published (current) - 13 Aug 2018 |
Issue number | 6 |
Volume | 98 |
Number of pages | 6 |
Original language | English |
We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.
© 2018, American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
Find related publications, people, projects, datasets and more using interactive charts.