Topological insulators and topological semimetals are both new classes of quantum
materials, which are characterized by surface states induced by the topology of the bulk …

Black phosphorus (BP) is a rapidly up and coming star in two‐dimensional (2D) materials.
The unique characteristic of BP is its in‐plane anisotropy. This characteristic of BP ignites a …

A ferroelectric is a material with a polar structure whose polarity can be reversed (switched)
by applying an electric field,. In metals, itinerant electrons screen electrostatic forces …

In recent years, transition metal dichalcogenides (TMDs) have garnered great interest as
topological materials. In particular, monolayers of centrosymmetric β-phase TMDs have …

The quantum behaviour of electrons in materials is the foundation of modern electronics and
information technology,,,,,,,,,–, and quantum materials with topological electronic and optical …

A two-dimensional topological insulator (2DTI) is guaranteed to have a helical one-
dimensional edge mode,,,,,,,,,, in which spin is locked to momentum, producing the quantum …

Weyl semimetals are topological materials whose electron quasiparticles obey the Weyl
equation. They possess many unusual properties that may lead to new applications. This is …

Transition metal dichalcogenides are layered materials which are composed of transition
metals and chalcogens of the group VIA in a 1: 2 ratio. These layered materials have been …

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 …

A Dirac nodal-line semimetal phase, which represents a new quantum state of topological
materials, has been experimentally realized only in a few systems, including PbTaSe 2, PtSn …