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research article
Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope
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-μs to μs range, depending on the cooling rate of the system.
Type
research article
Authors
Berruto, G.
•
Madan, I.
•
Murooka, Y.
•
Vanacore, G. M.
•
Pomarico, E.
•
Rajeswari, J.
•
Lamb, R.
•
Huang, P.
•
Kruchkov, A. J.
•
Togawa, Y.
Publication date
2018
Published in
Volume
120
Issue
11
Article Number
117201
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 23, 2018
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