Realization of a Spin-Wave Switch Based on the Spin-Transfer-Torque Effect

Thomas Meyer, Thomas Bracher, Frank Heussner, Alexander A. Serga, Hiroshi Naganuma, Koki Mukaiyama, Mikihiko Oogane, Yasuo Ando, Burkard Hillebrands, Philipp Pirro

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We investigate the amplification of externally excited spin-waves via the spin-transfer-torque (STT) effect in combination with the spin-Hall effect (SHE) resulting from short current pulses. In the case of overcompensation of the spin-wave damping, a strong nonlinear shift of the spin-wave frequency spectrum occurs. In particular, this shift limits spin-wave amplification from the SHE-STT effect. However, it allows for the realization of a spin-wave switch. At the corresponding working point, efficient spin-wave excitation is possible only in the presence of the SHE-STT effect with a spin-wave intensity that is a factor of 20 larger than in the absence of the SHE-STT effect.

Original languageEnglish
Article number3102005
JournalIEEE Magnetics Letters
Publication statusPublished - 2018 Feb 7


  • Spin electronics
  • magnons
  • spin waves
  • spin-Hall effect
  • spin-transfer torque


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