Flat-band materials such as the kagome metals or moiré superlattices are of intense current
interest. Flat bands can result from the electron motion on numerous (special) lattices and …

This article reviews recent theoretical and experimental work on a new class of topological
material—topological Kondo insulators, which develop through the interplay of strong …

Samarium hexaboride (SmB6) is an example of a Kondo insulator, in which strong electron
correlations cause a band gap to open. SmB6 hosts both a bulk insulating state and a …

Recent quantum oscillation experiments on SmB 6 pose a paradox, for while the angular
dependence of the oscillation frequencies suggest a 3D bulk Fermi surface, SmB 6 remains …

The Kondo lattice model plays a key role in our understanding of quantum materials, but a
lack of small parameters has posed a long-standing problem. We present a three …

We investigated the crystal-electric field ground state of the 4 f manifold in the strongly
correlated topological insulator SmB 6 using core-level nonresonant inelastic x-ray …

We theoretically study the magnetic phase diagram of a three-dimensional topological
Kondo insulator by means of real-space dynamical mean-field theory. We find that …

In order to clarify the controversial issue of the topological nature in a mixed-valent Kondo
system, SmB 6, we have explored the surface states on the nonpolar (110) surface of SmB 6 …

Topological Kondo insulators are a new class of topological insulators in which metallic
surface states protected by topological invariants reside in the bulk band gap at low …

SmB 6 was recently proposed to be both a strong topological insulator and a topological
crystalline insulator. For this and related cubic topological Kondo insulators, we prove the …