Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 51: Magnetism Poster B

MA 51.44: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster C

Macrospin-based demonstration of a Boltzmann machine — •Timo Pulch, Daniele Pinna, and Karin Everschor-Sitte — Institut of Physics, Johannes Gutenberg University, Mainz, Germany

Spintronics has consistently proven itself in new technological applications such as racetrack storage and magnetic logic gates. Proper modeling of such devices requires an intimate understanding of spin-torque and thermal effects. In this work we present how a suitable combination of magnetic logic gates and ambient noise within the macrospin model to demonstrate a Boltzmann machine. We will argue that randomization is performed efficiently by energy harvesting of thermal fluctuations, and that the proposed design can be used to invert the operation of logic gates by efficiently sampling across all possible inputs. Advances in this area are expected to yield novel approaches capable of tackling non-deterministic Boolean problems.