Dynamically generated edge states in topological Kondo insulators

Abstract

Kondo insulators combine strong electronic correlations with spin-orbit coupling and thereby provide a potential realization of correlated topological insulators. We present model calculations that allow us to study the onset of bulk coherence and concomitant topological edge states from the mixed valence to local moment regimes. Our real-space dynamical mean-field results include the detailed temperature dependence of the single-particle spectral function on slab geometries as well as the temperature dependence of the topological invariant. The relevance of our calculations for candidate materials like SmB6 is discussed.