To switch or not to switch, that is the question
Researchers from FELIX Laboratory and the Institute of Molecules and Materials (IMM) have disentangled the physics of single-shot all-optical magnetic switching in the recently-discovered ferrimagnet manganese-ruthenium-gallium (MRG). Along with collaborators from Ireland they have experimentally revealed the pulse- and temperature-dependent limits of the switching process, and these findings in turn allow us to deduce the underlying physics. Their results have been published as a Rapid Communication in Physical Review Research.
By testing magnetic switching in MRG as a function of wavelength, pulse duration and starting temperature, the researchers created state maps, yielding the necessary insight to understand the switching process.
Exchange-driven all-optical magnetic switching in compensated 3d ferrimagnets, C.S. Davies, G. Bonfiglio, K. Rode, J. Besbas, C. Banerjee, P. Stamenov, M.J.D. Coey, A. Kimel and A. Kirilyuk, Phys. Rev. Research 2, 032044 (R) (2020)