The first-principles band theory paradigm has been a key player not only in the process of
discovering new classes of topologically interesting materials, but also for identifying salient …

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 …

The Horace suite of programs has been developed to work with large multiple-measurement
data sets collected from time-of-flight neutron spectrometers equipped with arrays of position …

The search for a Fermi surface in the absence of a conventional Fermi liquid has thus far
yielded very few potential candidates. Among promising materials are spin-frustrated Mott …

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 …

Optical spectroscopy of ultimately thin materials has significantly enhanced our
understanding of collective excitations in low-dimensional semiconductors. This is …

Quantum oscillations in transport and thermodynamic parameters at high magnetic fields are
an unambiguous signature of the Fermi surface, the defining characteristic of a metal …

Topological insulators, with metallic boundary states protected against time-reversal-
invariant perturbations, are a promising avenue for realizing exotic quantum states of matter …

Methods to prepare and characterize neutron helical waves carrying orbital angular
momentum (OAM) were recently demonstrated at small-angle neutron scattering (SANS) …

Cerium hexaboride is a cubic f-electron heavy-fermion compound that displays a rich array
of low-temperature magnetic ordering phenomena which have been the subject of …