Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 21: Poster I

MA 21.38: Poster

Tuesday, March 13, 2018, 09:30–13:00, Poster A

Nano-scaled magnon transistor based on three-magnon splitting — •Qi Wang, Philipp Pirro, Thomas Brächer, and Andrii Chumak — Fachbereich Physik, Technische Universitaet Kaiserslautern, Kaiserslautern, Germany.

Spin waves and their quanta magnons open up a promising branch of high-speed and low-power information processing. The realization of single-chip all-magnon information systems demands for the development of circuits in which magnon currents can be manipulated by magnons themselves. In our previous study, we presented and tested experimentally a proof-of-concept magnon transistor. Here we use micromagnetic simulations to propose a conceptually different approach for the realization of a nano-scaled magnon transistor. In this device, a three- rather than a four-magnon scattering process is utilized. Source magnons interact with the gate magnons boosting a three-magnon scattering process in which one gate magnon scatters into one new source magnon and into one idle magnon. As a result, the number of the source magnons at the drain is increased and the transistor acts as an amplifier of magnon signals. Financial support by the ERC Starting Grant "MagnonCircuits" is gratefully acknowledged.