Emergent Dirac fermion states underlie many intriguing properties of graphene, and the search for them constitutes one strong motivation to explore two-dimensional (2D) allotropes of other elements.

Recently, the three-dimensional (3D) Dirac points and 3D Dirac semimetals have attracted tremendous attention in the field of topological physics. The 3D Dirac point is a fourfold band crossing in 3D ...

Exceptional points (EPs) are unique types of energy-level degeneracies that occur in non-Hermitian systems. Since their existence was first proposed more than a century ago, physicists have only been ...

(PhysOrg.com) -- As researchers continue to study graphene and its unique attributes, they find themselves fixated on different areas of its properties. One of those properties is that because of its ...

Chestnut Hill, Mass. (3/28/2022) – Working with a quantum material known as a kagome magnet, a team of Boston College physicists and colleagues have directly measured how individual electronic quantum ...

An important electronic property of graphene has been simulated for the first time using ultracold atoms. The experiment was carried out by physicists in Switzerland, who reproduced graphene’s ...

Tilted cone: the band structure of a type-II Dirac fermion is shown on the right The first experimental evidence of a quasiparticle known as a type-II Dirac fermion has been found by three independent ...

A new symmetry-broken parent state has been discovered in twisted bilayer graphene. In 2018 it was discovered that two layers of graphene twisted one with respect to the other by a "magic" angle show ...

Many seemingly mundane materials, such as the stainless steel on refrigerators or the quartz in a countertop, harbor fascinating physics inside them. These materials are crystals, which in physics ...