• DOI:10.1038/nnano.2014.88
• Corpus ID: 30787620

Nanomagnonic devices based on the spin-transfer torque.

@article{Urazhdin2014NanomagnonicDB,
  title={Nanomagnonic devices based on the spin-transfer torque.},
  author={Sergei Urazhdin and V. E. Demidov and Henning Ulrichs and T. Kendziorczyk and Tilmann Kuhn and Juerg Leuthold and G Wilde and Sergej O. Demokritov},
  journal={Nature nanotechnology},
  year={2014},
  volume={9 7},
  pages={
          509-13
        }
}

• S. Urazhdin, V. Demidov, +5 authors S. Demokritov
• Published 1 July 2014
• Physics
• Nature nanotechnology

Magnonics is based on signal transmission and processing by spin waves (or their quanta, called magnons) propagating in a magnetic medium. In the same way as nanoplasmonics makes use of metallic nanostructures to confine and guide optical-frequency plasmon-polaritons, nanomagnonics uses nanoscale magnetic waveguides to control the propagation of spin waves. Recent advances in the physics of nanomagnetism, such as the discovery of spin-transfer torque, have created possibilities for nanomagnonics. In particular, it was recently demonstrated that nanocontact spin-torque devices can radiate spin waves, serving as local nanoscale sources of signals for magnonic applications. However, the integration of spin-torque sources with nanoscale magnetic waveguides, which is necessary for the implementation of integrated spin-torque magnonic circuits, has not been achieved to date. Here, we suggest and experimentally demonstrate a new approach to this integration, utilizing dipolar field-induced magnonic nanowaveguides. The waveguides exhibit good spectral matching with spin-torque nano-oscillators and enable efficient directional transmission of spin waves. Our results provide a practical route for the implementation of integrated magnonic circuits utilizing spin transfer.