Enhanced Weiss oscillations in graphene

TL;DR

This paper investigates how periodic potential modulations in graphene enhance Weiss oscillations in magneto-conductivity, showing they are more pronounced and less damped with temperature increase compared to traditional 2D electron systems.

Contribution

It demonstrates that Weiss oscillations in graphene are stronger and less damped at higher temperatures due to the Dirac-like energy spectrum.

Findings

Weiss oscillations are periodic in inverse magnetic field.

Oscillations are more pronounced in graphene than in standard 2D systems.

Temperature increases dampen oscillations less in graphene.

Abstract

The magneto-conductivity of a single graphene layer where the electrons are described by the Dirac Hamiltonian weakly modulated by a periodic potential is calculated. It is shown that Weiss oscillations periodic in the inverse magnetic field appear, that are more pronounced and less damped with the increment of temperature as compared with the same oscillations in a typical two-dimensional electron system with a standard parabolic energy spectrum.