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 …

We review the recent, mainly theoretical, progress in the study of topological nodal line
semimetals in three dimensions. In these semimetals, the conduction and the valence bands …

We theoretically study three-dimensional topological semimetals (TSMs) with nodal lines
protected by crystalline symmetries. Compared to TSMs with point nodes, eg, Weyl …

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

Weyl semimetals exhibit unusual surface states and anomalous transport phenomena. It is
hard to manipulate the band structure topology of specific Weyl materials. Topological …

As opposed to ordinary metals, whose Fermi surfaces are two dimensional, topological
(semi) metals can exhibit protected one-dimensional Fermi lines or zero-dimensional Fermi …

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 …

Topological nodal line semimetals, a novel quantum state of materials, possess
topologically nontrivial valence and conduction bands that touch at a line near the Fermi …

The realization of Dirac and Weyl physics in solids has made topological materials one of
the main focuses of condensed matter physics. Recently, the topic of topological nodal line …

The band theory of solids is arguably the most successful theory of condensed-matter
physics, providing a description of the electronic energy levels in various materials …