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 …

Over the past decade, topology has emerged as a major branch in broad areas of physics,
from atomic lattices to condensed matter. In particular, topology has received significant …

The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

The topological phenomenon has been extensively studied in condensed matter physics
and has attracted much attention in many different fields. Like electrons, phonons can also …

Carbon foams (CFs) possess high storage capacity, good electronic conductivity and superb
mechanical strength, which demonstrate promising applications in many engineering fields …

Borophene, a 2D allotrope of boron and the lightest elemental Dirac material, is the latest
very promising 2D material owing to its unique structural and electronic characteristics of the …

We theoretically study the three-dimensional topological semimetals with nodal surfaces
protected by crystalline symmetries. Different from the well-known nodal-point and nodal …

Real topological phases featuring real Chern numbers and second-order boundary modes
have been a focus of current research, but finding their material realization remains a …

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 semimetals are characterized by symmetry-protected band crossings, which can
be preserved in different dimensions in momentum space, forming zero-dimensional nodal …