Conductivity of graphene with resonant and non-resonant adsorbates

TL;DR

This paper develops a comprehensive model for electronic transport in graphene with adsorbates, considering localization and inelastic effects, and identifies various conduction regimes based on scattering properties and Fermi energy.

Contribution

It introduces a unified framework that incorporates localization effects and inelastic processes for graphene with resonant and non-resonant adsorbates, detailing conduction regimes.

Findings

Semi-classical theory applies far from Dirac energy at low concentrations.

Near Dirac energy, conductivity exhibits universal quantum behaviors.

Different scattering regimes lead to distinct conduction properties.

Abstract

We propose a unified description of transport in graphene with adsorbates that fully takes into account localization effects and loss of electronic coherence due to inelastic processes. We focus in particular on the role of the scattering properties of the adsorbates and analyze in detail cases with resonant or non resonant scattering. For both models we identify several regimes of conduction depending on the value of the Fermi energy. Sufficiently far from the Dirac energy and at sufficiently small concentrations the semi-classical theory can be a good approximation. Near the Dirac energy we identify different quantum regimes, where the conductivity presents universal behaviors.