Topological semimetals (TSMs) are characterized by bulk band crossings in their electronic
structures, which are expected to give rise to gapless electronic excitations and topological …

Weyl and Dirac semimetals are three-dimensional phases of matter with gapless electronic
excitations that are protected by topology and symmetry. As three-dimensional analogs of …

Topological quantum chemistry and symmetry-based indicators have facilitated large-scale
searches for materials with topological properties at the Fermi energy (EF). We report the …

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 …

Topological materials discovery has evolved at a rapid pace over the past 15 years following
the identification of the first nonmagnetic topological insulators (TIs), topological crystalline …

Materials harbouring exotic quasiparticles, such as massless Dirac and Weyl fermions, have
garnered much attention from physics and material science communities due to their …

Dirac and Weyl semimetals are 3D analogues of graphene in which crystalline symmetry
protects the nodes against gap formation,,. Na3Bi and Cd3As2 were predicted to be Dirac …

Dirac and Weyl semimetals both exhibit arc-like surface states. However, whereas the
surface Fermi arcs in Weyl semimetals are topological consequences of the Weyl points …

We report the direct observation of the three-dimensional (3D) Dirac semimetal phase in
cadmium arsenide (Cd 3 As 2) by means of angle-resolved photoemission spectroscopy …

Discovered decades ago, the quantum Hall effect remains one of the most studied
phenomena in condensed matter physics and is relevant for research areas such as …