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 …

In this review, we discuss recent progress in the explorations of topological materials
beyond topological insulators; specifically, we focus on topological crystalline insulators and …

Three-dimensional topological crystalline insulators were recently predicted and observed
in the SnTe class of IV–VI semiconductors, which host metallic surface states protected by …

The mixed-chalcogenide compound TlBiSSe realizes a three-dimensional (3D) Dirac
semimetal state. In clean, low-carrier-density single crystals of this material, we found …

Heterostructures constructed from topological insulator materials have aroused great
research interests because of their various and unusual features and functions. Growth of …

The surface of a topological crystalline insulator (TCI) carries an even number of Dirac
cones protected by crystalline symmetry. We epitaxially grew high-quality Pb 1− x Sn x Te …

Photodetectors are optoelectronic devices with excellent photoelectric conversion abilities.
They have especially important applications in many fields, such as image sensing, video …

Two-dimensional (2D) topological crystalline insulators (TCIs) were recently predicted in thin
films of the SnTe class of IV–VI semiconductors, which can host metallic edge states …

Two-dimensional (2D) topological crystalline insulator, a new class where states are
protected by lattice symmetry instead of by time-reversal symmetry, is predicted in PbSe …

In the recently discovered topological crystalline insulators SnTe and Pb 1− x Sn x (Te, Se),
crystal symmetry and electronic topology intertwine to create topological surface states with …