seminar – Spin waves: electrical methods for the study of their dynamic

On Tuesday, January 30th 2023, we have the pleasure to welcome in SPINTEC Thibaut DEVOLDER from Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay. He will give us a seminar at 15:30 entitled :
Spin waves: electrical methods for the study of their dynamics

Place : IRIG/SPINTEC, auditorium 445 CEA Building 10.05 (access to CEA requires an entry authorization. Request it before January 18th at

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Abstract : Spin-waves (SW), or their quantized counterparts (magnons) are waves formed by the collective spin excitations in a magnetic body. In standard magnetic thin films and devices, the relevant spin-waves have typically frequencies in the 1-50 GHz range and usable wavelengths from 10 nm to 10 µm. As spin-waves determine to a large extent the rate at which one can manipulate the magnetization, they are of central importance in various applications of spin electronics, e.g. solid state magnetic memories, microwave magnetic oscillators and magnetization-based rf devices.
In this seminar, I will start with a survey of electrical methods for the study of spin-wave dynamics from their thermal population level up to the onset of the non-linear regime. I will focus on the electrical generation, electrical detection, and propagation of spin-waves with three attentions: (i) the impact of the spin wave dispersion relation, (ii) the impact of the helicity mismatch between spin waves and electromagnetic radiation, and (iii) the importance of the multimode character of spin wave conduits.

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