In 2017, we discovered quaternary i-MAX phases—atomically layered solids, where M is an
early transition metal, A is an A group element, and X is C—with a (M12/3M21/3) 2AC …

The interplay between strong electron interactions and band topology is a new frontier in the
search for exotic quantum phases. The Kondo insulator SmB6 has emerged as a promising …

A Kondo lattice is often electrically insulating at low temperatures. However, several recent
experiments have detected signatures of bulk metallicity within this Kondo insulating phase …

The Kondo insulator SmB 6 has emerged as a primary candidate for exotic quantum phases,
due to the predicted formation of strongly correlated, low-velocity topological surface states …

The thermal conductivity κ of the Kondo insulator SmB 6 was measured at low temperature,
down to 70 mK, in magnetic fields up to 15 T, on single crystals grown using both the floating …

Most of the experimental results presented in this book would not have been possible to
obtain without high-quality single-crystalline samples. The history of chemical synthesis and …

Samarium hexaboride crystallizes in a simple cubic structure (space group# 221, Pm3̄m),
but its properties are far from being straightforward. Initially classified as a Kondo insulator …

Compounds within the hexaboride class of materials exhibit a wide variety of interesting
physical phenomena, including polaron formation and quadrupolar order. In particular …

By means of new muon spin relaxation experiments, we disentangle extrinsic and intrinsic
sources of low-temperature bulk magnetism in the candidate topological Kondo insulator …

Abstract The Kondo insulator SmB6 is purported to develop into a robust topological
insulator at low temperatures. Yet there are several puzzling and unexplained physical …