论文标题
扭曲的双层过渡金属二分裂元素WSE $ {} _ 2 $：量子群集研究中的超导率
Superconductivity in the twisted bilayer transition metal dichalcogenide WSe${}_2$ : a quantum cluster study
论文作者
论文摘要
在过渡金属二甲基元化双层中观察到平坦的能带，例如扭曲的WSE $ {} _ 2 $，使这些材料变得有趣的前景，用于再现基于石墨烯的系统中观察到的行为。我们使用有效的Hubbard模型，提供了扭曲的WSE $ {} _ 2 $的描述来探索超导性的存在，这先前在实验中报道了。使用变分簇近似和集群动态平均场理论，我们预测可以通过扭曲角度和垂直置换场应用的手性$ d \ pm ID $的手性超沉有性的存在，在电子和孔掺杂系统中。
The observation of flat energy bands in transition metal dichalcogenide bilayers such as twisted WSe${}_2$ makes those materials interesting prospects for reproducing the behavior observed in graphene-based systems. We use an effective Hubbard model providing a description of twisted WSe${}_2$ to explore the presence of superconductivity, which was previously reported in experiments. Using both the variational cluster approximation and cluster dynamical mean-field theory, we predict the existence of chiral supercondictivity of type $d\pm id$ that can be tuned by the twist angle and by the application of a perpendicular displacement field, in both electron- and hole-doped systems.
