Kim Sunghoon, Mendez-Valderrama Juan Felipe, Wang Xuepeng, Chowdhury Debanjan
Department of Physics, Cornell University, Ithaca, NY, 14853, USA.
Nat Commun. 2025 Feb 17;16(1):1701. doi: 10.1038/s41467-025-56816-8.
The observation of a superconducting phase, an intertwined insulating phase, and a continuous transition between the two at a commensurate filling of ν = 1 in bilayers of twisted WSe at θ = 3.65 raises a number of intriguing questions about the origin of this phenomenology. Here we report the possibility of a displacement-field induced continuous transition between a superconductor and a quantum spin-liquid Mott insulator at ν = 1, starting with a simplified three-orbital model of twisted WSe, including on-site, nearest-neighbor density-density interactions, and a chiral-exchange interaction, respectively. By employing parton mean-field theory, we discuss the nature of these correlated insulators, their expected evolution with the displacement-field, and their phenomenological properties.
在扭曲的WSe双层中，当θ = 3.65且填充因子ν = 1时，观察到超导相、交织绝缘相以及两者之间的连续转变，这引发了许多关于这种现象学起源的有趣问题。在这里，我们从扭曲WSe的简化三轨道模型出发，包括在位、最近邻密度 - 密度相互作用以及手征交换相互作用，报告了在ν = 1时位移场诱导超导体与量子自旋液体莫特绝缘体之间连续转变的可能性。通过采用部分子平均场理论，我们讨论了这些关联绝缘体的性质、它们随位移场的预期演化以及它们的唯象学性质。
