Xu Yang

TL;DR: Quasiparticle interference is used to image the field-controlled Fermi surface of bismuth telluride (Bi2Te3) thin films under proximity effect from the superconductor niobium diselenide (NbSe2).

TL;DR: In this paper, the surface electronic properties on layered composition-tunable compounds Nb2n+1SinTe4n+2 (n = 1−5) were systematically studied, and it was shown that with the increasing of n, the distance between the chains becomes larger and the 1D electronic state is developed in the compounds with n ≥ 3.

TL;DR: A monolayer of van der Walls material PtBi2 is proved as a two-dimensional multiple topological insulator and topological protection of these channels is confirmed by directly demonstrating their robustness to variations of crystal orientation, edge geometry and sample temperature.