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 …

The field of two-dimensional topological semimetals, which emerged at the intersection of
two-dimensional materials and topological materials, has been rapidly developing in recent …

Recently, a type-II Weyl fermion was theoretically predicted to appear at the contact of
electron and hole Fermi surface pockets. A distinguishing feature of the surfaces of type-II …

In quantum field theory, Weyl fermions are relativistic particles that travel at the speed of light
and strictly obey the celebrated Lorentz symmetry. Their low-energy condensed matter …

Owing to the chirality of Weyl nodes, the Weyl systems can support one-way chiral zero
modes under a strong magnetic field, which leads to nonconservation of chiral currents—the …

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 semimetals have been classified into type I and type II with respect to the geometry of
their Fermi surfaces at the Weyl points. we propose another class of Weyl semimetal, whose …

A nodal loop is formed by a band crossing along a one-dimensional closed manifold, with
each point on the loop a linear nodal point in the transverse dimensions, and can be …

In the semiclassical regime, the chiral anomaly of the Weyl semimetals is demonstrated by
the quadratic longitudinal magnetoconductivity. Recently the planar Hall effect is proposed …

Recently, realizing new fermions, such as type-I and type-II Dirac/Weyl fermions in
condensed matter systems, has attracted considerable attention. Here, we show that the …