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Séminaire « Magnétisme et Physique du spin » de l’INSP

Antiferromagnetic spintronics : phenomenological models and approaches - Helen Gomonay - Mardi 29 novembre 2016 à 11 h

INSP - UPMC - 4 place Jussieu - 75005 Paris - Barre 22-32, 2e étage, salle 201

Helen Gomonay, Professor of the Chair of information Technology, National Technical University of Ukraine KPI, senior scientist at Johan Guttengerg University - SPICE - INSPIRE

Abstract

Nowadays antiferromagnets compete with ferromagnetic materials in the fields of active spintronics devices. Antiferromagnets are faster, higher protected from noise and more scalable than their ferromagnetic counterparts. However, their magnetic dynamics differs form the magnetic dynamics of ferromagnets and in many cases seems contrintuitive to « ferromagnetic community ». In my lecture I will highlight the peculiarities of antiferromagnetic dynamics in the presence of spin currents (spintronics) spin-orbit torques (spinorbitronics). After general introduction I will compare main features of FM and AF spintronics. As examples I will consider current-induced switching of AF nanoparticle depending on orientation of spin current polarization ; dynamics of AF domain walls in the presence of the Neel spin-orbit torques and time-dependent magnetic field.

Biography : Graduated from Moscow Institute of Physics and Technology in 1985. After working for 10 years in the National Academy of Science of Ukraine (Institute for Metal Physics) jointed National Technical University « KPI » for the pilot project aimed at starting the physical-technical education in Ukraine. Since 2000 developed and taught the course of « Quantum information theory » for Bachelor and Master students(for the first time in Ukraine). Since 2015 joined Sinova group in JGU. Scientific interests : theory of magnetism and, in particular, antiferromagnetism, antiferromagnetic spintronics, quantum optics.