Doping graphene near the 1/4 filling to shift extended flat band and van Hove singularity below E$_F$ has been highly desirable. Here we report experimental observation of an in Li-intercalated graphene. Strong electron-phonon interaction is clearly identified by notable kinks dispersion. Moreover, evolution structure upon Li intercalation shows that Kekul\'e order emerge simultaneously. Our wo...

Electron transport in single-walled carbon nanotubes (SWCNTs) is extremely sensitive to environmental effects. SWCNTs experiencing an inhomogeneous environment are effectively subjected to a disorder potential, which can lead to localized electronic states. An important element of the physical picture of such states localized on the nanometer-scale is the existence of a local vibronic mainfold ...

Benzenoids are a subfamily of hydrocarbons (molecules that only made hydrogen and carbon atoms) whose atoms form hexagons. These molecules widely studied in theoretical chemistry have lot concrete applications. Then, there is problems relative to this subject, like the enumeration all its Kekulé structures (i.e. valid configurations double bonds). In article, we focus our attention on two issue...

Since its introduction by August Kekulé in 1865,1 the concept of aromaticity has been continuously conquering new territories in chemistry (refs 2-20 are only a small fraction of the published articles, reviews, books, and conference proceedings on this subject). Initially, aromaticity was developed for the following classes of organic compounds: (i) monocyclic planar conjugate hydrocarbons and...