关于“通过石墨烯双层中的错向堆叠产生超过1000 T的面内伪磁场”的评论
Comment on "Creating in-plane pseudomagnetic fields in excess of 1000 T by misoriented stacking in a graphene bilayer"
摘要：
在最近的论文[Phys.Rev.B89，125418（2014）]中，作者认为可以将扭曲双层石墨烯的电子性质映射到平面内磁场中的双层石墨烯的电子性质。然而，他们对扭曲双层石墨烯的低能动力学的描述仅限于扩展区方案，因此忽略了超周期结构的影响。如果在超原胞布里渊区中研究能谱，我们发现与面内磁场的比较失败，因为（i）两种情况的能谱表现出不同的对称性，（ii）低能谱非常不同。
英文摘要：
In a recent paper [Phys. Rev. B 89, 125418 (2014)], the authors argue that it is possible to map the electronic properties of twisted bilayer graphene to those of bilayer graphene in an in-plane magnetic field. However, their description of the low-energy dynamics of twisted bilayer graphene is restricted to the extended zone scheme and therefore neglects the effects of the superperiodic structure. If the energy spectrum is studied in the supercell Brillouin zone, we find that the comparison with an in-plane magnetic field fails because (i) the energy spectra of the two situations exhibit different symmetries and (ii) the low-energy spectra are very different.
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