Subterahertz collective dynamics of polar vortices

Li, Q.; Stoica, V.A.; Pasciak, Marek; Zhu, Y.; Yuan, Y.; Yang, T.N.; McCarter, M.R.; Das, S.; Yadav, A.K.; Park, S.; Dai, C.; Lee, H. J.; Ahn, Y.; Marks, S.D.; Yu, S.K.; Kadlec, Christelle; Sato, T.; Hoffmann, M.C.; Chollet, M.; Kozina, M.E.; Nelson, S.; Zhu, D.; Walko, D.A.; Lindenberg, A.M.; Evans, P.G.; Chen, L.Q.; Ramesh, R.; Martin, L.W.; Gopalan, V.; Freeland, J.W.; Hlinka, Jiří; Wen, H.

doi:https://dx.doi.org/10.1038/s41586-021-03342-4

Number of the records: 1

Subterahertz collective dynamics of polar vortices

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SYSNO ASEP	0542867
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Subterahertz collective dynamics of polar vortices
Author(s)	Li, Q. (US) Stoica, V.A. (US) Pasciak, Marek (FZU-D)_ORCID Zhu, Y. (US) Yuan, Y. (US) Yang, T.N. (US) McCarter, M.R. (US) Das, S. (US) Yadav, A.K. (US) Park, S. (US) Dai, C. (US) Lee, H. J. (US) Ahn, Y. (US) Marks, S.D. (US) Yu, S.K. (US) Kadlec, Christelle (FZU-D)_{RID, ORCID} Sato, T. (US) Hoffmann, M.C. (US) Chollet, M. (US) Kozina, M.E. (US) Nelson, S. (US) Zhu, D. (US) Walko, D.A. (US) Lindenberg, A.M. (US) Evans, P.G. (US) Chen, L.Q. (US) Ramesh, R. (US) Martin, L.W. (US) Gopalan, V. (US) Freeland, J.W. (US) Hlinka, Jiří (FZU-D)_{RID, ORCID} Wen, H. (US)
Number of authors	32
Source Title	Nature. - : Palgrave Macmillan - ISSN 0028-0836 Roč. 592, č. 7854 (2021), s. 376-380
Number of pages	16 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	topological defects ; skyrmions ; polar skyrmions ; ferroelectricity skyrmions
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GX19-28594X GA ČR - Czech Science Foundation (CSF)
Research Infrastructure	CESNET II - 90042 - CESNET - zájmové sdružení právnických osob
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000653623600001
EID SCOPUS	85104264753
DOI	10.1038/s41586-021-03342-4
Annotation	Using terahertz-field excitation and femtosecond X-ray diffraction measurements, we observe ultrafast collective polarization dynamics that are unique to polar vortices earlier shown to have topology of 2D skyrmions. A previously unseen tunable mode, hereafter referred to as a vortexon, emerges in the form of transient arrays of nanoscale circular patterns of atomic displacements. Its frequency is considerably reduced (softened) at a critical strain, indicating a condensation (freezing) of structural dynamics. We use first-principles-based atomistic calculations and phase-field modelling to reveal the microscopic atomic arrangements and corroborate the frequencies of the vortex modes.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2022
Electronic address	https://doi.org/10.1038/s41586-021-03342-4

Number of the records: 1