Alexey V. Kimel
Radboud University, Nijmegen, The Netherland
Date
3 March 2021
Host
Steve Johnson
Title
Ultrafast Magnetism – Terra Incognita Beyond the Classical Approximations
Abstract
While magnetism is the strongest quantum mechanical phenomenon, the modern description of magnetization dynamics relies on thermodynamics and the corresponding approximations. I will show that a femtosecond laser pulse is a unique stimulus in magnetism that pushes the magnetization dynamics into a counter-intuitive regime, where the classical approximations fail, heat does not destroy, but reverses magnetization and a flash of light can control the quantum forces as well as write magnetic bits at the edge of time
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