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MA: Fachverband Magnetismus

MA 39: Poster Magnetism II

MA 39.12: Poster

Mittwoch, 11. März 2026, 18:00–21:00, P2

Optical manipulation of spin based AC-nanooscillators — •Niklas Dornquast¹, Kevin Jäckel¹, Jakob Walowski¹, Tim Böhnert², and Markus Münzenberg¹ — ¹University of Greifswald, Germany — ²The International Iberian Nanotechnology Laboratory (INL), Portugal

With the steady rise of artificial intelligence and the end of Moore's law, a novel approach for computational capabilities arises to fulfill the ever-increasing demand, while keeping energy consumption low. The research field of spintronics provides new possibilities for such energy-efficient technology by also utilizing the transport of electron spin in addition to charge transport, opening up operation processing in a higher Gigahertz frequency range. Devices that realize such utilization of electron spin are, for example, spintronic AC-nanooscillators such as Spin-Torque-nanooscillators (STNOs) and Spin-Hall-nanooscillators (SHNOs). Additionally, these types of nanooscillators have the prospect of being used in a whole new computer architecture based on the human brain, called "neuromorphic computing". We investigate the effects of femtosecond laser pulses (<100 fs) of different polarities on such nanooscillators by optimizing the lasers' parameters to increase oscillation efficiency as well as manipulate the oscillation frequency optically.

Keywords: nanooscillators; femtosecond lasers pulses; STNO; SHNO; neuromorphic computing