Spin dynamics of the $E_8$ particles
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866916337860739072 |
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| author | Wang, Xiao Puzniak, Konrad Schmalzl, Karin Balz, C. Matsuda, M. Okutani, Akira Hagiwara, M. Ma, Jie Wu, Jianda Lake, Bella |
| author_facet | Wang, Xiao Puzniak, Konrad Schmalzl, Karin Balz, C. Matsuda, M. Okutani, Akira Hagiwara, M. Ma, Jie Wu, Jianda Lake, Bella |
| contents | In this article, we report on inelastic neutron scattering measurements on a quasi-1D antiferromagnet BaCo$_2$V$_2$O$_8$ under a transverse magnetic field applied along the (0,1,0) direction. Combining results of inelastic neutron scattering experiments, analytical analysis, and numerical simulations, we precisely studied the $E_8$ excitations appearing in the whole Brillouin zone at $B_c^{1D}\approx 4.7$ T. The energy scan at $Q=(0,0,2)$ reveals a match between the data and the theoretical prediction of energies of multiple $E_8$ excitations. Furthermore, dispersions of the lightest three $E_8$ particles have been clearly observed, confirming the existence of the $E_8$ particles in BaCo$_2$V$_2$O$_8$. Our results lay down a concrete ground to systematically study the physics of the exotic $E_8$ particles. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2308_00249 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Spin dynamics of the $E_8$ particles Wang, Xiao Puzniak, Konrad Schmalzl, Karin Balz, C. Matsuda, M. Okutani, Akira Hagiwara, M. Ma, Jie Wu, Jianda Lake, Bella Strongly Correlated Electrons Statistical Mechanics Mathematical Physics In this article, we report on inelastic neutron scattering measurements on a quasi-1D antiferromagnet BaCo$_2$V$_2$O$_8$ under a transverse magnetic field applied along the (0,1,0) direction. Combining results of inelastic neutron scattering experiments, analytical analysis, and numerical simulations, we precisely studied the $E_8$ excitations appearing in the whole Brillouin zone at $B_c^{1D}\approx 4.7$ T. The energy scan at $Q=(0,0,2)$ reveals a match between the data and the theoretical prediction of energies of multiple $E_8$ excitations. Furthermore, dispersions of the lightest three $E_8$ particles have been clearly observed, confirming the existence of the $E_8$ particles in BaCo$_2$V$_2$O$_8$. Our results lay down a concrete ground to systematically study the physics of the exotic $E_8$ particles. |
| title | Spin dynamics of the $E_8$ particles |
| topic | Strongly Correlated Electrons Statistical Mechanics Mathematical Physics |
| url | https://arxiv.org/abs/2308.00249 |