Hot charge carriers in graphene exhibit fascinating physical phenomena, whose
understanding has improved greatly over the past decade. They have distinctly different …

Cadmium arsenide (Cd 3 As 2), a time-honored and widely explored material in solid-state
physics, has recently attracted considerable attention. This was triggered by a theoretical …

The absence of mirror symmetry, or chirality, is behind striking natural phenomena found in
systems as diverse as DNA and crystalline solids. A remarkable example occurs when chiral …

The Dirac semimetal cadmium arsenide (Cd3As2), a 3D electronic analog of graphene, has
sparked renewed research interests for its novel topological phases and excellent …

Ultrafast experiments using sub-picosecond pulses of light are poised to play an important
role in the study and use of topological materials and, particularly, of the three-dimensional …

High-order harmonic generation (HHG) in condensed matter is highly important for potential
applications in various fields, such as materials characterization, all-optical switches, and …

We have used a combination of linear response time-domain THz spectroscopy (TDTS) and
nonlinear THz pump-probe spectroscopy to separately probe the electronic momentum and …

Traditional absorbers are usually sandwich structures in which a metallic ground plane is
employed to prevent the transmission. Such absorbers suffer from a major drawback that …

By employing optical pump Terahertz (THz) probe spectroscopy, a three dimensional (3D)
Dirac semimetal, Cd 3 As 2 film, was investigated systematically at room temperature. After …

Revealing the ultrafast dynamics of three-dimensional (3D) Dirac fermions is critical for both
fundamental science and device applications. So far, how the cooling of 3D Dirac fermions …