这是十分无聊的固体物理讨论班(我愿称为石墨烯讨论班)的要做的pre,由于真心无聊的西西弗斯式的工作,感觉不放在这里就是浪费了当时准备一天的时间。 Band structure with LCAO Monolayer Linear combination of atomic orbitals(LCAO)可以用作近似来计算能带结构。我们用它来考虑二维石墨烯的能带。 石墨烯中,碳原子有...
关于Twisted Bilayer Graphene (TGB)的哈密顿量推导,可直接参看Bistritzer和MacDonald在PNAS上的原文。更详细的推导可以参照发表在Wiley Online Library上的Handbook of Graphene Set-Vol8-chapter6。(其第八卷第六章也即里斯本大学的G.Catarina的硕士毕业论文)。总得来说在写TGB的哈密顿量时,有两个关键的点,一是...
Using the electron density functional theory, the electronic band structure of pure and potassium-intercalated bilayer graphene has been studied. It is shown that after the intercalation process, a band gap appears in the band structure of bilayer graphene. In addition, the energy gap changes ...
Graphene/g-C3N4 bilayer:considerable band gap opening and effective band structure engineering. X. Li,Y. Dai,Y. Ma,S. Han,B. Huang. Physical Chemistry Chemical Physics . 2014Li, X.; Dai, Y.; Ma, Y.; Han, S.; Huang, B. Graphene/g-C3N4 bilayer: considerable band gap opening and ...
Bernal bilayer graphene (BLG) offers a highly flexible platform for tuning the band structure, featuring two distinct regimes. One is a tunable band gap induced by large displacement fields. Another is a gapless metallic band occurring at low fields, featuring rich fine structure consisting of four...
Transport experiments in twisted bilayer graphene have revealed multiple superconducting domes separated by correlated insulating states. These properties are generally associated with strongly correlated states in a flat mini-band of the hexagonal moir茅 superlattice as was predicted by band structure ...
Solid-state nanopores in graphene, in particular, hold much promise, as the spacing between nucleotides in single-stranded DNA (ssDNA) is 0.32–0.52 nm, which is comparable to the “thickness” of single- and bilayer graphene (0.34–0.68 nm), making this material very attractive for electronic...
In ordinary semiconductors, the gap between the conduction band (unoccupied by electrons) the valence band (occupied by electrons) is finite, and fixed by the crystalline structure of the material. In bilayer graphene, however, as Wang's team demonstrated, the bandgap is variable and can be con...
The band structure and transport properties of massive Dirac fermions in bilayer graphene with velocity modulation in space are investigated in the presence of a previously created band gap. It is pointed out that velocity engineering may be considered as a factor to control the band gap of symmet...
The electronic band structure of bilayer graphene is studied systematically in the presence of substitutional B and/or N doping, using density functional theory with van der Waals correction. We show that introduction of B-N pairs into bilayer graphene can be used to create a substantial band ...