Quantum entanglement of XY-type spin dimers in Shastry-Sutherland lattice
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909439912574976 |
|---|---|
| author | Ma, Qianli Billingsley, Brianna R. Marshall, Madalynn Dahlbom, David A. Hao, Yiqing Pajerowski, Daniel M. Kolesnikov, Alexander I. Bai, Xiaojian Batista, Cristian D. Kong, Tai Cao, Huibo |
| author_facet | Ma, Qianli Billingsley, Brianna R. Marshall, Madalynn Dahlbom, David A. Hao, Yiqing Pajerowski, Daniel M. Kolesnikov, Alexander I. Bai, Xiaojian Batista, Cristian D. Kong, Tai Cao, Huibo |
| contents | We report a comprehensive study on the origin of the enigmatic disordered ground state within the Shastry-Sutherland lattice, BaCe$_2$ZnS$_5$, at low temperatures. The magnetization and heat capacity data show a lack of magnetic ordering down to 73 mK. We deploy a localized spin dimer model which can accurately reproduce the dynamic structure factor of the neutron data, magnetization and heat capacity data. Remarkably, the intra-dimer exchange interaction shows strong XY-type anisotropy and the ground state of BaCe$_2$ZnS$_5$ is in an entangled state $(|\uparrow\uparrow> - |\downarrow\downarrow>)/\sqrt{2}$. This is in contrast to the singlet dimer state that is obtained for Heisenberg interactions. These results confirm that BaCe$_2$ZnS$_5$ is in a quantum paramagnet state consisting of entangled spin dimer states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_17913 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum entanglement of XY-type spin dimers in Shastry-Sutherland lattice Ma, Qianli Billingsley, Brianna R. Marshall, Madalynn Dahlbom, David A. Hao, Yiqing Pajerowski, Daniel M. Kolesnikov, Alexander I. Bai, Xiaojian Batista, Cristian D. Kong, Tai Cao, Huibo Strongly Correlated Electrons We report a comprehensive study on the origin of the enigmatic disordered ground state within the Shastry-Sutherland lattice, BaCe$_2$ZnS$_5$, at low temperatures. The magnetization and heat capacity data show a lack of magnetic ordering down to 73 mK. We deploy a localized spin dimer model which can accurately reproduce the dynamic structure factor of the neutron data, magnetization and heat capacity data. Remarkably, the intra-dimer exchange interaction shows strong XY-type anisotropy and the ground state of BaCe$_2$ZnS$_5$ is in an entangled state $(|\uparrow\uparrow> - |\downarrow\downarrow>)/\sqrt{2}$. This is in contrast to the singlet dimer state that is obtained for Heisenberg interactions. These results confirm that BaCe$_2$ZnS$_5$ is in a quantum paramagnet state consisting of entangled spin dimer states. |
| title | Quantum entanglement of XY-type spin dimers in Shastry-Sutherland lattice |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2412.17913 |