J. J.F. Heitz
Optically Gated Terahertz-Field-Driven Switching of Antiferromagnetic CuMnAs
Heitz, J. J.F.; Nádvorník, L.; Balos, V.; Behovits, Y.; Chekhov, A. L.; Seifert, T. S.; Olejník, K.; Kašpar, Z.; Geishendorf, K.; Novák, V.; Campion, R. P.; Wolf, M.; Jungwirth, T.; Kampfrath, T.
Authors
L. Nádvorník
V. Balos
Y. Behovits
A. L. Chekhov
T. S. Seifert
K. Olejník
Z. Kašpar
K. Geishendorf
V. Novák
RICHARD CAMPION RICHARD.CAMPION@NOTTINGHAM.AC.UK
Principal Research Fellow
M. Wolf
TOMAS JUNGWIRTH tomas.jungwirth@nottingham.ac.uk
Research Professor of Ferromagnetic Semiconductors
T. Kampfrath
Abstract
We show scalable and complete suppression of the recently reported terahertz-pulse-induced switching between different resistance states of antiferromagnetic CuMnAs thin films by ultrafast gating. The gating functionality is achieved by an optically generated transiently conductive parallel channel in the semiconducting substrate underneath the metallic layer. The photocarrier lifetime determines the timescale of the suppression. As we do not observe a direct impact of the optical pulse on the state of CuMnAs, all observed effects are primarily mediated by the substrate. The sample region of suppressed resistance switching is given by the optical spot size, thereby making our scheme potentially applicable for transient low-power masking of structured areas with feature sizes of about 200 nm and even smaller.
Citation
Heitz, J. J., Nádvorník, L., Balos, V., Behovits, Y., Chekhov, A. L., Seifert, T. S., …Kampfrath, T. (2021). Optically Gated Terahertz-Field-Driven Switching of Antiferromagnetic CuMnAs. Physical Review Applied, 16(6), Article 064047. https://doi.org/10.1103/PhysRevApplied.16.064047
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 24, 2021 |
Online Publication Date | Dec 20, 2021 |
Publication Date | Dec 20, 2021 |
Deposit Date | Jan 31, 2022 |
Publicly Available Date | Jan 31, 2022 |
Journal | Physical Review Applied |
Electronic ISSN | 2331-7019 |
Publisher | American Physical Society (APS) |
Peer Reviewed | Peer Reviewed |
Volume | 16 |
Issue | 6 |
Article Number | 064047 |
DOI | https://doi.org/10.1103/PhysRevApplied.16.064047 |
Keywords | General Physics and Astronomy |
Public URL | https://nottingham-repository.worktribe.com/output/7356874 |
Publisher URL | https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.16.064047 |
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Optically Gated Terahertz-Field-Driven Switching
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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