We demonstrate that light-induced heat pulses of different duration and energy can write Skyrmions in a broad range of temperatures and magnetic field in FeGe. Using a combination of camera-rate and pump-probe cryo-Lorentz transmission electron microscopy, we directly resolve the spatiotemporal evolution of the magnetization ensuing optical excitation. The Skyrmion lattice was found to maintain its structural properties during the laser-induced demagnetization, and its recovery to the initial state happened in the sub-mu s to mu s range, depending on the cooling rate of the system

Berruto, G., Madan, I., Murooka, Y., Vanacore, G., Pomarico, E., Rajeswari, J., et al. (2018). Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope. PHYSICAL REVIEW LETTERS, 120(11) [10.1103/PhysRevLett.120.117201].

Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope

Vanacore G;
2018

Abstract

We demonstrate that light-induced heat pulses of different duration and energy can write Skyrmions in a broad range of temperatures and magnetic field in FeGe. Using a combination of camera-rate and pump-probe cryo-Lorentz transmission electron microscopy, we directly resolve the spatiotemporal evolution of the magnetization ensuing optical excitation. The Skyrmion lattice was found to maintain its structural properties during the laser-induced demagnetization, and its recovery to the initial state happened in the sub-mu s to mu s range, depending on the cooling rate of the system
Articolo in rivista - Articolo scientifico
Ultrafast Electron Microscopy, cryo-Lorentz microscopy, Skyrmions
English
2018
120
11
117201
none
Berruto, G., Madan, I., Murooka, Y., Vanacore, G., Pomarico, E., Rajeswari, J., et al. (2018). Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope. PHYSICAL REVIEW LETTERS, 120(11) [10.1103/PhysRevLett.120.117201].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/252494
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