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Institut für Angewandte Physik
AG Demokritov/Nichtlineare Magnetische Dynamik

Corrensstraße 2 48149 Münster
Tel.: 0251 - 83 3 35 51
Fax: 0251 - 83 3 35 13
demokrit@uni-muenster.de

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Nonlinear Magnetic Dynamics

Group of Prof.Dr. S.O. Demokritov

 

Welcome-workgroup 19 10 2010

from left to right: Vladislav Demidov, Sergej Urazhdin (Guest), Agnes Gödde, Henning Ulrichs, Johann Jersch, Alexey Ustinov (Guest), Oleksandr Dzyapko, Patryk Nowik-Boltyk, Sergej Uschakow, Matthias Buchmeier, Eric Edwards, Sergej O. Demokritov


The following bachelor and master theses are available at our group:

  • "Time resolved measurements of dynamical magnetic processes"
  • "Spin wave excitation through spin polarized current"
  • "Optical spectroscopy on magnon Bose-Einstein condensates"

News:

Our paper, called "Synchronization of spin Hall nano-oscillators to external microwave signals" was published in Nature communications.

Abstract:

Recently, a novel type of spin-torque nano-oscillators driven by pure spin current generated via the spin Hall effect was demonstrated. Here we report the study of the effects of external microwave signals on these oscillators. Our results show that they can be efficiently synchronized by applying a microwave signal at approximately twice the frequency of the auto-oscillation, which opens additional possibilities for the development of novel spintronic devices. We find that the synchronization exhibits a threshold determined by magnetic fluctuations pumped above their thermal level by the spin current, and is significantly influenced by the nonlinear self-localized nature of the auto-oscillatory mode.


Imprint | © 2014
Institut für Angewandte Physik
AG Demokritov/Nichtlineare Magnetische Dynamik

Corrensstraße 2
· 48149 Münster
Tel.: 0251 - 83 3 35 51 · Fax: 0251 - 83 3 35 13
E-Mail: demokrit@uni-muenster.de