Topological insulators are electronic materials that have a bulk band gap like an ordinary
insulator but have protected conducting states on their edge or surface. These states are …

Abstract 2D materials have attracted considerable attention in the past decade for their
superlative physical properties. These materials consist of atomically thin sheets exhibiting …

Phase transitions between the quantum spin Hall (QSH) and the insulator phases in three
dimensions (3D) are studied. We find that in inversion-asymmetric systems there appears a …

There has been increasing interest in phenomena emerging from relativistic electrons in a
solid, which have a potential impact on spintronics and magnetoelectrics. One example is …

We study the electronic surface states of the semiconducting alloy bismuth antimony (Bi 1− x
Sb x). Using a phenomenological tight-binding model, we show that the Fermi surface for the …

Abstract Two‐dimensional (2D) monometallic pnictogens (antimony or Sb, and bismuth or
Bi) nanosheets demonstrate potential in a variety of fields, including quantum devices …

Since graphene has been successfully exfoliated, two-dimensional (2D) materials constitute
a vibrant research field and open vast perspectives in high-performance applications …

Topological insulators (TIs) are a new type of electronic materials in which the nontrivial
insulating bulk band topology governs conducting boundary states with embedded spin …

Knowledge about chemical functionalization is of fundamental importance to design novel
two-dimensional topological insulators. Despite theoretical predictions of quantum spin Hall …

We summarize both historical and recent challenges on angle-resolved and high-energy
resolution ultraviolet photoelectron spectroscopy (UPS) of organic thin films. Topics selected …