Magnetic field-programmable acceleration of ultrafast demagnetization for multifunctional spintronic devices

https://www.eurekalert.org/news-releases/1093615

"fs laser-induced ferromagnetic 2D van der Waals Fe3GeTe2 simultaneously accelerates demagnetization speed/ suppress its efficiency... controlling energy transfer mechanisms among electron spins (angular momentum), lattice vibrations, charge carriers, for potential fs-speed magnetic storage/ logic... near 210°K Curie temperature applying 7 T magnetic field reduces demagnetization time from 22.2 to 9.9 ps, decreasing efficiency from 79 to 52%... acceleration effect is due to magnetic field-modulated spin entropy"