Theory of Correlated Insulator(s) and Superconductor at $\nu=1$ in Twisted WSe$_2$
| Autor: | Kim, Sunghoon, Mendez-Valderrama, Juan Felipe, Wang, Xuepeng, Chowdhury, Debanjan |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The observation of a superconducting phase, an intertwined insulating phase, and a continuous transition between the two at a commensurate filling of $\nu=1$ in bilayers of twisted WSe$_2$ (tWSe$_2$) at $\theta=3.65^0$ raises a number of intriguing questions about the origin of this phenomenology. Starting with a simplified three-orbital model of tWSe$_2$, including an on-site and nearest-neighbor density-density interactions, as well as a chiral-exchange interaction, we discuss the possibility of a displacement-field induced direct superconductor to quantum spin-liquid Mott insulator transition at $\nu=1$ using parton mean-field theory. We discuss the nature of these correlated insulators, their expected evolution with the displacement-field, and their phenomenological properties. Further experiments will likely help unravel the mysteries tied to this fascinating experimental platform. Comment: 5 pages, 3 figures |
| Databáze: | arXiv |
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