The present paper discusses the band structure of graphene based on the rectangular 4-atom unit cell model to establish an appropriate k-vector for the Bloch electron dynamics. To obtain the band energy of a Bloch electron in graphene, we extend the tight-binding calculations for the Wigner-...
Researchers have used a specially crafted electric potential to manipulate the electronic band structure of graphene, laying the groundwork for on-demand electronic band design. Scientists have long been trying to tune the electronic band structures of materials so that those materials exhibit desired p...
The results of ab initio study of the opportunities for tuning the band structure, magnetic and transport properties of graphene materials on semiconductor substrates by transverse electric field (Eext) are present. This study was performed within the framework of the density functional theory (DFT)...
The Dirac band structure of graphene1,2has endowed this atomically thin two-dimensional material with exceptional optical and transport properties. As a scale-invariant host of chiral carriers3, graphene exhibits a universal optical response in absorption, with a single sheet capable of absorbing ~2.3...
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...
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researchprogressinthebandengineeringandapplicationsofgraphene 系统标签: 石墨调控graphene进展应用掺杂 文章编号:1001 9731(2014)12 12033 09石墨烯的能带调控及其应用的研究进展∗余超智1,黎德龙1,李伟平1,张豫鹏1,潘春旭1,2(1.武汉大学物理科学与技术学院和人工微结构教育部重点实验室,武汉430072;2.武汉大学电子显微...
Using density functional theory calculations we investigate the electronic structure of graphene doped by deposition of foreign atoms. We demonstrate that, as the charge transfer to the graphene layer increases, the band structure of the pristine graphene sheet is substantially affected. This is particul...
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Engineered nanomaterials (such as graphene oxide, GO) have shown great potential in biomedical applications as therapeutic and imaging agents. However, little is known about their potential transformations in biological settings, which may alter their physicochemical properties and consequently hinder their ...