Angularly quantized spin rotations in hexagonal LuMnO3
- 등재 SCIE, SCOPUS
- OA유형 Green Published, Green Submitted, gold
- 발행기관 Nature Research
- 발행년도 2022
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000190275
- 본문언어 영어
- Published As https://doi.org/10.1038/s41598-022-06394-2
- PubMed https://pubmed.ncbi.nlm.nih.gov/35165348
초록/요약
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).
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