MN2S : Alexandre HAMADEH - Spin excitations for microwave generation and information processing

Department MN2S is pleased to welcome Alexandre HAMADEH, postdoctoral researcher at Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Germany.

Alexandre will give a seminar at 13h30 on March 27 which subject is on :  Spin excitations for microwave generation and information processing.

Abstract  : This seminar will present two areas of study focusing on the potential and methods for exciting spin for microwave generation and data processing.
The first part of the seminar will delve into the field of spintronics, emphasizing the recent developments in the use of spintronics for microwave devices. Our research has led to the experimental observation of simultaneous multimode emission of incommensurate microwave oscillations in spin-transfer oscillators. This achievement is significant because of the oscillators' DC-to-GHz conversion capabilities, which are based on spin transport and magnetoresistance effects at nanoscale dimensions. In addition, their nonlinear dynamics and compatibility with CMOS technology are remarkable. I will present the microscopic processes behind this observation, such as parametric four-magnon scattering and hybridization of eigenmodes in magnetic multilayers, which provide insights into frequency co-generation and mode-splitting manipulation[1]. The second part of the seminar will focus on magnon-phonon coupling.