In recent years, spin-gapless semiconductors (SGSs) with parabolic and linear band
dispersions have aroused great interest worldwide in the field of materials science due to …

The topological semimetal is a new, theoretically predicted and experimentally discovered,
topological state of matter. In one of its several realizations, the topological semimetal hosts …

We study the band topology and the associated linking structure of topological semimetals
with nodal lines carrying Z 2 monopole charges, which can be realized in three-dimensional …

In topological semimetals, the valance band and conduction band meet at zero-dimensional
nodal points or one-dimensional nodal rings, which are protected by band topology and …

Recently, topological quantum states of non-Hermitian systems, exhibiting rich, new exotic
states, have attracted great attention in condensed-matter physics. As for the demonstration …

Initiated by the discovery of topological insulators, topologically non-trivial materials have
attracted immense interest in the physics community in the past decade. One of the latest …

Weyl points in three spatial dimensions are characterized by a Z-valued charge—the Chern
number—which makes them stable against a wide range of perturbations. A set of Weyl …

Topological nodal-line semimetals are characterized by one-dimensional lines of band
crossing in the Brillouin zone. In contrast to nodal points, nodal lines can be in topologically …

We propose a type of Hopf semimetal indexed by a pair of numbers (p, q), where the Hopf
number is given by pq. The Fermi surface is given by a preimage of the Hopf map, which …

We have found Dirac nodal lines (DNLs) in the band structures of metallic rutile oxides IrO 2,
OsO 2, and RuO 2 and have revealed a large spin Hall conductivity contributed by these …