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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2312.09055 |
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| _version_ | 1866909321205383168 |
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| author | Hu, Biaoyan Peng, Yingying Liu, Xiaoqiang Li, Qizhi Gu, Qiangqiang Krogstad, Matthew J. Osborn, Raymond Honda, Takashi Feng, Ji Li, Yuan |
| author_facet | Hu, Biaoyan Peng, Yingying Liu, Xiaoqiang Li, Qizhi Gu, Qiangqiang Krogstad, Matthew J. Osborn, Raymond Honda, Takashi Feng, Ji Li, Yuan |
| contents | We investigate a spin-$\frac{1}{2}$ antiferromagnet, CuBr$_2$, which has quasi-one-dimensional structural motifs. The system has previously been observed to exhibit unusual Raman modes possibly due to a locally deformed crystal structure driven by the low-dimensional magnetism. Using hard X-ray scattering and neutron total scattering, here we aim to verify a specific form of tetramerized lattice deformation proposed in the previous study. Apart from diffuse scattering signals which we can reproduce by performing a thorough modeling of the lattice's thermal vibrations, we do not observe evidence for a tetramerized lattice structure within our detection sensitivity. As a result, it is more likely that the unusual Raman modes in CuBr$_2$ arise from classical magnon-phonon hybridization, rather than from quantum spin-singlet-driven lattice deformation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_09055 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Exploration of magnetoelastic deformations in spin-chain compound CuBr$_2$ Hu, Biaoyan Peng, Yingying Liu, Xiaoqiang Li, Qizhi Gu, Qiangqiang Krogstad, Matthew J. Osborn, Raymond Honda, Takashi Feng, Ji Li, Yuan Strongly Correlated Electrons We investigate a spin-$\frac{1}{2}$ antiferromagnet, CuBr$_2$, which has quasi-one-dimensional structural motifs. The system has previously been observed to exhibit unusual Raman modes possibly due to a locally deformed crystal structure driven by the low-dimensional magnetism. Using hard X-ray scattering and neutron total scattering, here we aim to verify a specific form of tetramerized lattice deformation proposed in the previous study. Apart from diffuse scattering signals which we can reproduce by performing a thorough modeling of the lattice's thermal vibrations, we do not observe evidence for a tetramerized lattice structure within our detection sensitivity. As a result, it is more likely that the unusual Raman modes in CuBr$_2$ arise from classical magnon-phonon hybridization, rather than from quantum spin-singlet-driven lattice deformation. |
| title | Exploration of magnetoelastic deformations in spin-chain compound CuBr$_2$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2312.09055 |