From low to high field: magneto-transport properties of electron gases in lateral superlattices grown on GaAs vicinal surfaces

Abstract

Arrays of coupled quantum wires are obtained by growing a lateral superlattice in the channel of selectively doped heterojunctions. Before and beyond the magnetic quantum limit, new phenomena are observed. Our analysis of the low field magnetoresistance and of the quantum transport in the Landau bands gives a consistent value of the lateral potential amplitude.