The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Topological insulators constitute one of the most intriguing phenomena in modern
condensed matter theory. The unique and exotic properties of topological states of matter …

We present a general methodology toward the systematic characterization of crystalline
topological insulating phases with time-reversal symmetry. In particular, taking the two …

Weyl semimetals in three-dimensional crystals provide the paradigm example of
topologically protected band nodes. It is usually taken for granted that a pair of colliding …

The topology of line nodes Band structure degeneracies in topological materials can take
the form of lines or even chains of interconnected loops. Wu et al. study theoretically these …

We present a framework to systematically address topological phases when finer
partitionings of bands are taken into account, rather than only considering the two …

In this work, we present theoretical predictions of a two-dimensional collinear
antiferromagnetic semimetal, CrO, which exhibits a giant spin-split band structure, spin …

Weyl semimetals are arguably the most paradigmatic form of a gapless topological phase.
While the stability of Weyl nodes, as quantified by their topological charge, has been …

We demonstrate the existence of topologically stable unpaired exceptional points (EPs), and
construct simple non-Hermitian (NH) tight-binding models exemplifying such remarkable …

Nodal lines inside the momentum space of three-dimensional crystalline solids are
topologically stabilized by a π flux of Berry phase. Nodal-line rings in PT-symmetric systems …