Two-dimensionality of metallic surface conduction in Co3Sn2S2 thin films

Abstract

Magnetic Weyl semimetals, such as Co3Sn2S2, are ideal to realise anomalous transport properties based on the Berry curvature in the specific electronic bands and are expected to be useful for topological spintronics. Here, the authors investigate the bulk and surface conduction channels of Co3Sn2S2 determining the relationship between the film thickness and surface conductance.