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

In this paper we review the basic theoretical aspects as well as some important experimental
results of the band anticrossing effects in highly electronegativity-mismatched …

Modern technique of electron spin resonance (ESR) measurements and data analysis in
strongly correlated metals, which allows finding the full set of spectroscopic parameters …

The book on Heavy-Fermion Systems is a part of the Book series" Handbook of Metal
Physics", each volume of which is written to facilitate the research of Ph. D. students, faculty …

High pressure resistivity and Hall effect measurements on Sm B 6 show that the activation
gap Δ vanishes discontinuously between 45 and 53 kbar, yielding at high pressures a mass …

Kondo insulating materials lie outside the usual dichotomy of weakly versus correlated—
band versus Mott—insulators. They are metallic at high temperatures but resemble band …

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 …

Using inelastic neutron scattering, we map a 14 meV coherent resonant mode in the
topological Kondo insulator SmB 6 and describe its relation to the low energy insulating …

We show that a simple model involving two narrow (≃ 500 K) peaks in the density of states
(DOS) at the edges of a narrow (≃ 1000 K) gap can account for the observed anomalies in …

We report the temperature-dependent three-dimensional angle-resolved photoemission
spectra of the Kondo semiconductor SmB 6. We found a difference in the temperature …