Physikalische Chemie - Direktor: Prof. Dr. Martin Wolf
PC Online Talk
Chair: Daniela Zahn

Thursday, June 25, 2020, 3:00 pm
Seminar Link
Dr. Alexander Chekhov
FHI Department PC
Terahertz spin dynamics in Mn2Au driven by the Neel spin-orbit torque
Neel spin-orbit torque (NSOT) is a novel tool for spin manipulation in antiferromagnets with special symmetry (CuMnAs, Mn2Au). As shown experimentally, application of current through such materials can lead to switching of the Neel vector. With clear opportunity of high-speed control of antiferromagnetic ordering, there were yet no investigations of NSOT time-dynamics in the terahertz range.
This talk will present our recent results in measuring ultrafast spin dynamics in Mn2Au following application of free-space terahertz pulses. The data indicates that the THz-induced NSOT acts on Mn2Au spins and launches an 0.6 THz antiferromagnetic resonance mode.

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Meeting ID: 820 1992 1016