Data archive of "Layer-selective spin-orbit coupling and strong correlation in bilayer graphene"

Spin-orbit coupling (SOC) and electron-electron interaction can mutually influence each other and give rise to a plethora of intriguing phenomena in condensed matter systems. In pristine bilayer graphene, which has weak SOC, intrinsic Lifshitz transitions and concomitant van-Hove singularities lead to the emergence of many-body correlated phases. Layer-selective SOC can be proximity induced by adding a layer of tungsten diselenide (WSe2) on its one side. By applying an electric displacement field, the system can be tuned across a spectrum wherein electronic correlation, SOC, or a combination of both dominates. Our investigations reveal an intricate phase diagram of proximity-induced SOC-selective bilayer graphene. Not only does this phase diagram include those correlated phases reminiscent of SOC-free doped bilayer graphene, but it also hosts unique SOC-induced states allowing a compelling measurement of valley g-factor and a seemingly impossible correlated insulator at charge neutrality, thereby showcasing the remarkable tunability of the interplay between interaction and SOC in WSe2 enriched bilayer graphene.

自旋轨道耦合（SOC）与电子-电子相互作用可以相互影响，从而在凝聚态系统中引发一系列引人入胜的现象。在原始双层石墨烯中，由于其自旋轨道耦合较弱，内在的 Lifshitz 转变及其伴随的 van-Hove 奇点导致了许多体关联相的出现。通过在其一侧添加一层硒化钨（WSe2）层，可以诱导出层选择性的自旋轨道耦合。通过施加电位移场，系统可以在电子关联、自旋轨道耦合或两者的组合占主导地位的光谱范围内进行调节。我们的研究揭示了邻近诱导的自旋轨道耦合选择性双层石墨烯的复杂相图。该相图不仅包括那些与无自旋轨道耦合掺杂双层石墨烯相似的关联相，还容纳了独特的自旋轨道耦合诱导态，这允许对谷能因子进行令人信服的测量，并在电荷中性处呈现出看似不可能的关联绝缘体，从而展示了在富含 WSe2 的双层石墨烯中，相互作用与自旋轨道耦合之间相互作用的显著可调性。