论文标题
图案化的双层石墨烯是一种可调的，强相关的系统
Patterned bilayer graphene as a tunable, strongly correlated system
论文作者
论文摘要
Moire石墨烯中超导性的最新观察结果已引起对该系统的强烈兴趣，随后的研究表明，更复杂的相图，包括相关的绝缘体和铁磁相。在这里，我们提出了一个替代系统，即静电图案化的双层石墨烯（PBG），其中通过金属门而不是Moire效应诱导超建模。我们表明，通过改变间隙或调制强度，可以将双层石墨烯调节到密切相关的状态中。进一步的计算表明，单层石墨烯是不可能的。我们提出了一种通用技术，用于解决周期潜力的库仑筛查，并证明该系统在实验上是可行的。
Recent observations of superconductivity in Moire graphene have lead to an intense interest in that system, with subsequent studies revealing a more complex phase diagram including correlated insulators and ferromagnetic phases. Here we propose an alternate system, electrostatically patterned bilayer graphene (PBG), in which a supermodulation is induced via metallic gates rather than the moire effect. We show that, by varying either the gap or the modulation strength, bilayer graphene can be tuned into the strongly correlated regime. Further calculations show that this is not possible in monolayer graphene. We present a general technique for addressing Coulomb screening of the periodic potential and demonstrate that this system is experimentally feasible.
