Band conductivity oscillations in a gate-tunable graphene superlattice

Abstract

Experiments in a tunable graphene superlattice show that the unusual 1/B periodic resistance oscillations at high temperatures in the energy spectrum of electrons in a 2D periodic potential, known as the Hofstadter butterfly, coexist with oscillations due to commensurability between the electron cyclotron radius and the superlattice’s period.