Structural short - range order and electronic properties of graphene at low temperatures

TL;DR

This paper presents a theoretical analysis of how short-range structural order affects the electronic properties of graphene at low temperatures, including the density of states, resistivity, and thermal conductivity.

Contribution

It introduces a model linking short-range order structures to electronic properties and identifies conditions for gap formation in the density of states.

Findings

Conditions for gap appearance and disappearance in DOS are identified.

Temperature dependence of electronic properties is characterized.

Large-area structural inhomogeneities significantly influence electronic behavior.

Abstract

A theoretical study of the DOS, resistivity and thermal conductivity of a metallized epitaxial graphene with impurities and structural inhomogeneous of the short-range order type is performed. The conditions for the appearance and disappearance of a gap in DOS are obtained for the case where the location of defects changes. A temperature dependence of relaxation time, DOS, resistivity and thermal conductivity is described only in the presence of the structures forming large-area cells in the graphene layer.