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Physicists have precisely measured the ultrafast change in a magnetic state in materials by observing the emission of terahertz (THz) radiation that accompanies such a change in magnetization. An international research team that included scientists from Bielefeld University, Uppsala University, the University of Strasbourg, the University of Shanghai for Science and Technology, Max Planck Institute for Polymer Research, ETH Zürich, and the Free University Berlin developed and tested the ultrafast magnetometry method. The work could pave the way for spintronic research and technologies based on a purely acoustic and, where possible, heat-free, ultrafast control of magnetism.
A material’s magnetic state and its dynamics are…READ MORE