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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2022
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2208.03995 |
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| _version_ | 1866909226515824640 |
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| author | Luo, Rui Leonard Chen, Gang |
| author_facet | Luo, Rui Leonard Chen, Gang |
| contents | We propose the superconducting van der Waals material 4Hb-TaS$_2$ to realize the $\mathbb{Z}_2$ topological order and interpret the recent discovery of the spontaneous vortex generation in 4Hb-TaS$_2$ as the vison-vortex nucleation. For the alternating stacking of metallic/superconducting and Mott insulating layers in 4Hb-TaS$_2$, we expect the local moments in the Mott insulating 1T-TaS$_2$ layer to form the $\mathbb{Z}_2$ topological order. The spontaneous vortex generation in 4Hb-TaS$_2$ is interpreted from the transition or nucleation between the superconducting vortex and the $\mathbb{Z}_2$ vison in different phase regimes. Differing from the single vison-vortex nucleation in the original Senthil-Fisher's cuprate proposal, we consider such nucleation process between the superconducting vortex lattice and the vison crystal. We further propose experiments to distinguish this proposal with the $\mathbb{Z}_2$ topological order from the chiral spin liquid scenarios. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2208_03995 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Is spontaneous vortex generation in superconducting 4Hb-TaS$_2$ from vison-vortex nucleation with $\mathbb{Z}_2$ topological order? Luo, Rui Leonard Chen, Gang Superconductivity Materials Science Strongly Correlated Electrons We propose the superconducting van der Waals material 4Hb-TaS$_2$ to realize the $\mathbb{Z}_2$ topological order and interpret the recent discovery of the spontaneous vortex generation in 4Hb-TaS$_2$ as the vison-vortex nucleation. For the alternating stacking of metallic/superconducting and Mott insulating layers in 4Hb-TaS$_2$, we expect the local moments in the Mott insulating 1T-TaS$_2$ layer to form the $\mathbb{Z}_2$ topological order. The spontaneous vortex generation in 4Hb-TaS$_2$ is interpreted from the transition or nucleation between the superconducting vortex and the $\mathbb{Z}_2$ vison in different phase regimes. Differing from the single vison-vortex nucleation in the original Senthil-Fisher's cuprate proposal, we consider such nucleation process between the superconducting vortex lattice and the vison crystal. We further propose experiments to distinguish this proposal with the $\mathbb{Z}_2$ topological order from the chiral spin liquid scenarios. |
| title | Is spontaneous vortex generation in superconducting 4Hb-TaS$_2$ from vison-vortex nucleation with $\mathbb{Z}_2$ topological order? |
| topic | Superconductivity Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2208.03995 |