Xenes, mono‐elemental atomic sheets, exhibit Dirac/Dirac‐like quantum behavior. When
interfaced with other 2D materials such as boron nitride, transition metal dichalcogenides …

The exciton, a bound state of an electron and a hole, is a fundamental quasiparticle induced
by coherent light–matter interactions in semiconductors. When the electrons and holes are …

Driven and non‐equilibrium quantum states of matter have attracted growing interest in both
theoretical and experimental studies in condensed matter physics. Recent progress in …

In this paper, a detailed analysis of the temperature‐dependent optical properties of
epitaxially grown cadmium arsenide (Cd3As2), a newly discovered 3D Dirac semimetal is …

Excitons are spin integer particles that are predicted to condense into a coherent quantum
state at sufficiently low temperature. Here by using photocurrent imaging we report …

Recent years have seen the rapid discovery of solids whose low-energy electrons have a
massless, linear dispersion, such as Weyl, line-node, and Dirac semimetals. The remarkable …

We consider a ground-state band insulator turning into a nonequilibrium excitonic insulator
(NEQ-EI) upon visiting properly selected and physically relevant highly excited states. The …

I present a fully ab initio scheme to model transient spectroscopy signals in the presence of
strongly bound excitons. Using LiF as a prototype material, I show that the scheme is able to …

Topological insulators (TIs) possess spin-polarized Dirac fermions on their surface but their
unique properties are often masked by residual carriers in the bulk. Recently,(Sb1− x Bi x) …

The nontrivial topology of p-wave superfluids makes these systems attractive candidates in
information technology. In this work we report on the topological state of ap-wave …