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Berlin 2024 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 41: Spintronics (Other Effects)

MA 41.3: Vortrag

Donnerstag, 21. März 2024, 15:30–15:45, H 2013

Non-hermiticity in spintronics: oscillation death and stochastic control of stability in coupled spintronic oscillators — •Steffen Wittrock1,2, Salvatore Perna3, Romain Lebrun2, Katia Ho2, Roberta Dutra4, Ricardo Ferreira5, Paolo Bortolotti2, Claudio Serpico3, and Vincent Cros21Helmholtz-Zentrum Berlin, Berlin, Germany — 2Unité Mixte de Physique CNRS, Thales, Palaiseau, France — 3University of Naples Federico II, Naples, Italy — 4Centro Brasileiro de Pesquisas Fésicas, Rio de Janeiro, Brazil — 5International Iberian Nanotechnology Laboratory, Braga, Portugal

The potential of non-hermitian physics in spintronics is just about to be discovered and anticipated to uncover a manifold of intriguing phenomena and potential applications. In a system of coupled spintronic oscillators, we have just recently demonstrated the phenomenon of amplitude death to occur in the vicinity of an exceptional point, connecting nonlinear physics with the principles of non-hermiticity. Here, we present the control of the coupled oscillator stability and occuring stochastics in the vicinity of an exceptional point.

Keywords: exceptional points; non-hermiticity; spin torque nano oscillators; spintronics

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