Dae-Jeong Kim

TL;DR: The authors' observed in-gap Fermi surface oddness tied with the Kramers' point topology, their coexistence with the two-dimensional transport anomaly in the Kondo hybridization regime, as well as their robustness against thermal recycling, collectively provide strong evidence for protected surface metallicity with a Fermani surface whose topology is consistent with the theoretically predicted topological FermI surface.

TL;DR: These results serve as proof that at low temperatures SmB6 has a metallic surface that surrounds an insulating bulk, paving the way for transport studies of the surface state in this proposed TKI material.

TL;DR: The electronic structure of SmB6 in high magnetic fields is traced and it is found that it does indeed have two-dimensional surface states, and this material is confirmed to be a topological insulator.

TL;DR: In this article, the authors studied the transport properties of the Kondo insulator SmB6 with a specialized configuration designed to distinguish bulk-dominated conduction from surface dominated conduction and found that as the material is cooled below 4 K, it exhibits a crossover from bulk to surface conduction with a fully insulating bulk.

TL;DR: In this article, the thickness-dependent transport measurements on doped SmB6 were performed and it was shown that magnetic and non-magnetic doping results in contrasting behaviour that supports the conclusion that Smb6 shows virtually no residual bulk conductivity.