Terahertz time-domain spectroscopy (THz-TDS) is a powerful technique for material's
characterization and process control. It has been used for contact-free conductivity …

The first-principles band theory paradigm has been a key player not only in the process of
discovering new classes of topologically interesting materials, but also for identifying salient …

Two-dimensional layered materials (2DLMs) have attracted a tremendous amount of
attention as photodetectors due to their fascinating features, including high potentials in new …

The two-dimensional electron systems in graphene and in topological insulators are
described by massless Dirac equations. Although the two systems have similar …

Topological insulators have been proposed to be best characterized as bulk
magnetoelectric materials that show response functions quantized in terms of fundamental …

Plasmons are quantized collective oscillations of electrons and have been observed in
metals and doped semiconductors. The plasmons of ordinary, massive electrons have been …

Using femtosecond time-and angle-resolved photoemission spectroscopy, we investigated
the nonequilibrium dynamics of the topological insulator Bi 2 Se 3. We studied p-type Bi 2 …

With high quality topological insulator Bi 2 Se 3 thin films, we report thickness-independent
transport properties over wide thickness ranges. Conductance remained nominally constant …

Three-dimensional topological insulators are fascinating materials with insulating bulk yet
metallic surfaces that host highly mobile charge carriers with locked spin and momentum …

Abstract A three-dimensional (3D) topological insulator features a 2D surface state
consisting of a single linearly dispersive Dirac cone,–. Under broken time-reversal …