0508074 - FZÚ 2020 RIV US eng J - Journal Article
Sivarajah, P. - Steinbacher, A. - Dastrup, B. - Lu, J. - Xiang, M. - Ren, W. - Kamba, Stanislav - Cao, S. - Nelson, K.A.
THz-frequency magnon-phonon-polaritons in the collective strong-coupling regime.
Journal of Applied Physics. Roč. 125, č. 21 (2019), s. 1-17, č. článku 213103. ISSN 0021-8979. E-ISSN 1089-7550
R&D Projects: GA ČR GA15-08389S
Institutional support: RVO:68378271
Keywords : magnetoelectric coupling * THz spectroscopy * magnon
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.286, year: 2019
Method of publishing: Limited access
https://doi.org/10.1063/1.5083849

We report on the strong coupling of both the electric and the magnetic degrees of freedom to an ultrafast terahertz frequency electromagnetic wave.Optical phonons in a slab of ferroelectric lithium niobate are strongly coupled to a THz electric field to form phonon-polaritons, which are simultaneously strongly coupled to magnons in an adjacent slab of canted antiferromagnetic erbium orthoferrite.The strong coupling leads to the formation of new magnon-phonon-polariton modes. Our simple yet versatile waveguide platform provides a promising avenue through which to explore ultrafast THz spintronics, quantum electrodynamics, sensing, and spectroscopic applications.

Permanent Link: http://hdl.handle.net/11104/0299018