Laser-induced Skyrmion writing and erasing in an ultrafast cryo-Lorentz transmission electron microscope

Berruto, G. et al. (2018) Laser-induced Skyrmion writing and erasing in an ultrafast cryo-Lorentz transmission electron microscope. Physical Review Letters, 120(11), 117201. (doi:10.1103/PhysRevLett.120.117201) (PMID:29601740)

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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-μs to μs range, depending on the cooling rate of the system.

Item Type:Articles
Additional Information:The LUMES laboratory acknowledges support from the NCCR MUST, Sinergia CDSII5-171003 NanoSkyrmionics and an Ambizione grant of the Swiss National Science Foundation. G. B. acknowledges financial support from the Swiss National Science Foundation (SNSF) through the Grant No. 200021_159219/1. E. P. acknowledges financial support from the SNSF through an Advanced Postdoc Mobility Grant No. (P300P2_158473). H. M. R. acknowledges support from the SNSF through Grant No. 200020_166298.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McGrouther, Dr Damien and Togawa, Dr Yoshihiko and LAMB, Raymond
Authors: Berruto, G., Madan, I., Murooka, Y., Vanacore, G.M., Pomarico, E., Rajeswari, J., Lamb, R., Huang, P., Kruchkov, A.J., Togawa, Y., LaGrange, T., McGrouther, D., Rønnow, H.M., and Carbone, F.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Published Online:14 March 2018
Copyright Holders:Copyright © 2018 American Physical Society
First Published:First published in Physical Review Letters 120(11):117201
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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