QM2 - Quantum Matter and Materials | February 18, 14:30
Towards functionality - dynamics studies of complex materials
Functionality in materials bases not only on the possibility to affect their properties with external stimuli, but also on the time and length scales such switching occurs on. Time-resolved experimental techniques explore switching behavior directly and furthermore provide access to coupling mechanisms between different electronic and structural degrees of freedom. In the field of magnetic dynamics, the laser-induced suppression of helical spin order in heavy lanthanide metals reveals a new and very efficient angular-momentum transfer channel. For the antiferromagnetic semiconductor EuTe we studied the interplay between magnetic and structural dynamics. For the photon-pulse-induced Verwey transition in magnetite, we could further narrow down the time scale on which orbital order decays as well as gain further insight into the character of the low-temperature phase.
Helmholtz Zentrum Berlin
Seminar Room of the Institute of Physics II
Contact: Thomas Koethe