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 …

Weyl semimetals are conductors whose low-energy bulk excitations are Weyl fermions,
whereas their surfaces possess metallic Fermi arc surface states. These Fermi arc surface …

The generation of photocurrent in an ideal two-dimensional Dirac spectrum is symmetry
forbidden. In sharp contrast, we show that three-dimensional Weyl semimetals can …

The band structure of a type-II Weyl semimetal has pairs of electron and hole pockets that
coexist over a range of energies and touch at a topologically protected conical point. We …

The recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in
nature and dramatically broadens the classification of topological phases. However, in TaAs …

The recent proposal of the type-II Weyl semimetal state has attracted significant interest. In
this Letter, we propose the concept of the three-dimensional type-II Dirac fermion and …

Three-dimensional condensed matter incarnations of Weyl fermions generically have a tilted
dispersion—in sharp contrast to their elusive high-energy relatives where a tilt is forbidden …

Weyl particles are elusive relativistic fermionic particles with vanishing mass. While not
having been found as an elementary particle, they are found to emerge in solid-state …

The Coulomb interaction among massless Dirac fermions in graphene is unscreened
around the isotropic Dirac points, causing a logarithmic velocity renormalization and a cone …

Different from the isotropic Dirac cones existing in other two-dimensional (2D) materials,
anisotropic Dirac cones have the merit of anisotropic carrier mobility for applications in …