Cloning the Dirac cones of bilayer graphene to the zone center by selenium adsorption

Meng Kai Lin, Jun Zhao, Joseph A. Hlevyack, T. C. Chiang

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

Dirac cones can foster extraordinary electronic effects, as exemplified by the case of graphene layers. Angle-resolved photoemission reveals that adsorption of selenium (Se) vapor on bilayer graphene creates a symmetric hybrid clone of the Dirac cones at the zone center. A detailed analysis aided by first-principles calculations shows that the adsorbed layer consists of an ordered array of Se8 molecules. The uncovered cloning mechanism illustrates a method to generate electronic features of scientific and technological interests by gentle surface modification via van der Waals adsorption.

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文章編號78
期刊npj 2D Materials and Applications
6
發行號1
DOIs
出版狀態已出版 - 12月 2022

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