论文标题
超级晶格中的电子状态，由单层和双层石墨烯的交替条组成
Electronic states in a superlattice consisting of alternating strips of single-layer and bilayer graphene
论文作者
论文摘要
提出了由单层和双层石墨烯的交替条组成的超晶格的模型，其能量谱的参数可以通过更改垂直于样品表面的外部电场来控制。使用Kronig-Penney模型，根据分析，根据该分析，根据该分析，根据该分析，根据该分析，根据该分析，根据单层和双层石墨烯的带状宽度的比率，研究了石墨烯超晶格的能量光谱。将分析溶液的结果与通过密度函数理论的方法进行建模的结果进行了比较。结果表明，在考虑具有狭窄的双层石墨烯条和单层石墨烯的宽条带时，用于得出分散方程的低能近似是有效的。
A model of a superlattice consisting of alternating strips of single-layer and bilayer graphene is proposed, whose parameters of the energy spectrum can be controlled by changing the external electric field perpendicular to the surface of the sample. Using the Kronig-Penney model, the dispersion equation is obtained, based on the analysis of which the energy spectrum of a graphene superlattice is studied depending on the ratio of the strip widths of single-layer and bilayer graphene. The results of the analytical solution are compared with the results of modeling by methods of the theory of the density functional. It is shown that the low-energy approximation used to derive the dispersion equation is valid when considering a superlattice with narrow strips of bilayer graphene and wide strips of single-layer graphene.
