Abstract The periodic Anderson and Kondo lattice model describe the physics of conduction
electrons in extended orbitals interacting with strongly correlated electrons in localized …

This review discusses the heavy-electron compounds and related materials from the
perspective of their electrodynamic response. The investigation of the electrodynamic …

The heavy fermion semiconductors, or Kondo insulators, are very narrow gap
semiconductors in which the properties show unusual temperature dependencies. We shall …

Recent theoretical studies of topologically nontrivial electronic states in Kondo insulators
have pointed to the importance of spin-orbit coupling (SOC) for stabilizing these states …

The relation between mechanical and electrical relaxation in polymer/lithium-salt complexes
is a fascinating and still unresolved problem in condensed-matter physics, yet has an …

We review many-body effects, their microscopic origin, as well as their impact on
thermoelectricity in correlated narrow-gap semiconductors. Members of this class—such as …

Neutron scattering measurements show that the crossover (at T≤ 10 K) from metallic heavy-
fermion to semiconducting behavior coincides with the formation of a gap in the magnetic …

The properties of the semiconducting phase of heavy-fermion systems are examined within
the framework of mean-field theory. The theory exhibits the possibility of a transition from a …

We present a detailed numerical study of ground state and finite temperature spin and
charge dynamics of the two-dimensional Kondo lattice model with hopping t and exchange …

Kondo insulator materials—such as CeRhAs, CeRhSb, YbB12, Ce3Bi4Pt3 and SmB6—are
3 d, 4 f and 5 f intermetallic compounds that have attracted considerable interest in recent …