Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 24: Focus Session: Exploiting spintronics for unconventional computing (joint session MA/TT)

MA 24.3: Hauptvortrag

Mittwoch, 14. März 2018, 10:15–10:45, H 1012

Spin waves for unconventional computing and data processing — •Philipp Pirro, Thomas Brächer, and Andrii Chumak — Fachbereich Physik and Landesforschungszentrum OPTIMAS, TU Kaiserslautern, Erwin-Schrödinger-Straße 56, 67663 Kaiserslautern

Spin waves, the collective excitations of the spin lattice of a magnetic material and their quanta, magnons, show a large variety of linear and nonlinear wave phenomena. They constitute a flow of spin angular momentum which opens a new sub-field of spintronics: magnon spintronics, where information is transferred and processed using magnons including a coupling to electron-based spintronic circuits.

In my presentation, I will first review different computing approaches based on spin waves and discuss the advantages and challenges of an interference-based logic. Next, I will present a selection of the experimentally realized macroscopic prototypes for spin-wave based logic like the majority gate and the magnon transistor. A downscaling of more than three orders of magnitude of these prototypes is required to compete with conventional CMOS technology. Therefore, I will discuss new features associated with the miniaturization like strong quantization effects as well as ways to interconnect to conventional spintronic circuits. Exemplarily, I will present different nanoscopic magnonic devices which use linear and nonlinear effects like magnonic wake-up receivers and nano-transistors.