Superlattices Consisting of "Lines" of Adsorbed Hydrogen Atom Pairs on Graphene

Abstract

The structures and electron properties of new superlattices formed on graphene by adsorbed hydrogen molecules are theoretically described. It has been shown that superlattices of the (n, 0) zigzag type with linearly arranged pairs of H atoms have band structures similar to the spectra of (n, 0) carbon nanotubes. At the same time, superlattices of the (n, n) type with a "staircase" of adsorbed pairs of H atoms are substantially metallic with a high density of electronic states at the Fermi level and this property distinguishes their spectra from the spectra of the corresponding (n, n) nanotubes. The features of the spectra have the Van Hove form, which is characteristic of each individual superlattice. The possibility of using such planar structures with nanometer thickness is discussed.

arXiv comment5 pages, 4 figures

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• First-principles modeling of the polycyclic aromatic hydrocarbons reduction
• SU(12) Kondo Effect in Carbon Nanotube Quantum Dot
• Electron Confinement Induced by Diluted Hydrogen-like Ad-atoms in Graphene Ribbons
• Pseudospin Splitting of the Energy Spectrum of Planar Polytype Graphene-Based Superlattices