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자연과학대학
물리학전공
Journal papers
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Angularly quantized spin rotations in hexagonal LuMnO3
Title
Angularly quantized spin rotations in hexagonal LuMnO3
Authors
Kim S.
;
Nam J.
;
Xu X.
;
Cheong S.-W.
;
Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상
Issue Date
2022
Journal Title
Scientific Reports
ISSN
2045-2322
Citation
Scientific Reports vol. 12, no. 1
Publisher
Nature Research
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Optical control of the spin degree of freedom is often desired in application of the spin technology. Here we report spin-rotational excitations observed through inelastic light scattering of the hexagonal LuMnO3 in the antiferromagnetically (AFM) ordered state. We propose a model based on the spin–spin interaction Hamiltonian associated with the spin rotation of the Mn ions, and find that the spin rotations are angularly quantized by 60°, 120°, and 180°. Angular quantization is considered to be a consequence of the symmetry of the triangular lattice of the Mn-ion plane in the hexagonal LuMnO3. These angularly-quantized spin excitations may be pictured as isolated flat bubbles in the sea of the ground state, which may lead to high-density information storage if applied to spin devices. Optically pumped and detected spin-excitation bubbles would bring about the advanced technology of optical control of the spin degree of freedom in multiferroic materials. © 2022, The Author(s).
DOI
10.1038/s41598-022-06394-2
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