Light-driven ultrafast phonomagnetism
Here we show that light-driven phonons can be utilized to coherently manipulate macroscopic magnetic states. Intense mid-infrared electric field pulses, tuned to resonance with a phonon mode of the archetypical antiferromagnet DyFeO3, induce ultrafast and long-living changes of the fundamental exchange interaction between rare-earth orbitals and transition metal spins. Non-thermal lattice control of the magnetic exchange, defining the very stability of the macroscopic magnetic state, allows us to perform picosecond coherent switching between competing antiferromagnetic and weakly ferromagnetic spin orders. Our discovery emphasizes the potential of resonant phonon excitation for the manipulation of ferroic order on ultrafast timescales.
Univ. Regensburg (Germany)
Since October 2021 - Assistant Professor, Institute for Molecules and Materials, Radboud University Nijmegen, the Netherlands 2020-2021: Postdoctoral researcher, Department of Physics, Regensburg, Germany 2016-2020: Postdoctoral researcher, Kavli Institute of Nanoscience, TU Delft, the Netherlands 2011-2015: Ph.D. degree in Physics, Institute for Molecules and Materials, Radboud University Nijmegen, the Netherlands 2009-2011: Master Degree in Physics, Faculty of Radiophysics, National Taras Shevchenko University of Kyiv, Ukraine