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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.00766 |
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| _version_ | 1866915484979429376 |
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| author | Brassington, A. Ma, Q. Duan, G. Calder, S. Kolesnikov, A. I. Taddei, K. M. Sala, G. Choi, E. S. Wang, H. Xie, W. Frandsen, B. A. Li, N. Sun, X. F. Liu, C. Yu, R. Zhou, H. D. Aczel, A. A. |
| author_facet | Brassington, A. Ma, Q. Duan, G. Calder, S. Kolesnikov, A. I. Taddei, K. M. Sala, G. Choi, E. S. Wang, H. Xie, W. Frandsen, B. A. Li, N. Sun, X. F. Liu, C. Yu, R. Zhou, H. D. Aczel, A. A. |
| contents | The quantum dimer magnet, with antiferromagnetic intradimer and interdimer Heisenberg exchange between spin-1/2 moments, is known to host an up/down - down/up singlet ground state when the intradimer exchange is dominant. Rare-earth-based quantum dimer systems with strong spin-orbit coupling offer the opportunity for tuning their magnetic properties by using magnetic anisotropy as a control knob. Here, we present bulk characterization and neutron scattering measurements of the quantum dimer magnet Yb$_2$Be$_2$SiO$_7$. We find that the Yb$^{3+}$ ions can be described by an effective spin-1/2 model at low temperatures and the system does not show signs of magnetic order down to 50 mK. The magnetization, heat capacity, and neutron spectroscopy data can be well-described by an isolated dimer model with highly anisotropic exchange that stabilizes a singlet ground state with a wavefunction up/up - down/down or up/up + down/down. Our results show that strong spin-orbit coupling can induce novel entangled states of matter in quantum dimer magnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_00766 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Novel bipartite entanglement in the quantum dimer magnet Yb$_2$Be$_2$SiO$_7$ Brassington, A. Ma, Q. Duan, G. Calder, S. Kolesnikov, A. I. Taddei, K. M. Sala, G. Choi, E. S. Wang, H. Xie, W. Frandsen, B. A. Li, N. Sun, X. F. Liu, C. Yu, R. Zhou, H. D. Aczel, A. A. Strongly Correlated Electrons The quantum dimer magnet, with antiferromagnetic intradimer and interdimer Heisenberg exchange between spin-1/2 moments, is known to host an up/down - down/up singlet ground state when the intradimer exchange is dominant. Rare-earth-based quantum dimer systems with strong spin-orbit coupling offer the opportunity for tuning their magnetic properties by using magnetic anisotropy as a control knob. Here, we present bulk characterization and neutron scattering measurements of the quantum dimer magnet Yb$_2$Be$_2$SiO$_7$. We find that the Yb$^{3+}$ ions can be described by an effective spin-1/2 model at low temperatures and the system does not show signs of magnetic order down to 50 mK. The magnetization, heat capacity, and neutron spectroscopy data can be well-described by an isolated dimer model with highly anisotropic exchange that stabilizes a singlet ground state with a wavefunction up/up - down/down or up/up + down/down. Our results show that strong spin-orbit coupling can induce novel entangled states of matter in quantum dimer magnets. |
| title | Novel bipartite entanglement in the quantum dimer magnet Yb$_2$Be$_2$SiO$_7$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2505.00766 |