"Ultrafast Spin Dynamics Solids: "Femtomagnetism and Spintronics""

Dr. Hans Christian Schneider, Professor, Physics Department and Research Center OPTIMAS, University of Kaiserslautern, Germany

The electron spin has been exploited extensively in magneto-electronic devices, such as hard disks. Device designs have approached the nanoscale, but the switching times have not quite followed suit, and
are still much longer than what is available in state-of-the-art laser labs. Consequently, there is a huge interest to understand spin dynamics in solids (ferromagnets, metals, semiconductors) at ultrashort timescales, especially femtosecond opto-magnetism. I will present some recent experimental results in the field of femtosecond laser-induced spin-dynamics in semiconductors and ferromagnets. I will also discuss some of the theoretical concepts
used in the description of these phenomena.