Shunsuke A. Sato

TL;DR: In this article, the authors review the recent development of the first-principles calculation for light-induced electron dynamics in solids by revising its application to recent attosecond experiments.

TL;DR: In this article, the nonlinear interactions between two optical phonons in SnTe, a two-dimensional in-plane ferroelectric material, enables a dynamical amplification of the electric polarization within sub-picoseconds time domain.

TL;DR: In this article, the authors investigated the transport properties of massless and massive Dirac fermion systems that mimics graphene and topological insulators, respectively, and found that the light-induced Hall effect mainly originates from the imbalance of photocarrier distribution in momentum space, although the emergent Floquet-Berry curvature also has a nonzero contribution.

TL;DR: In this paper, the quantum paraelectric ground state of SrTiO$_3$ can be accessed via a microscopic $ab~initio$ approach based on density functional theory.

TL;DR: It is observed that the THz pump pulse causes a selective modification of the coherence lifetime of the excitons, while keeping their oscillator strength and peak energy unchanged, which opens the way to the use of semiconducting transition metal dichalcogenides as compact and efficient platforms for high-speed electroabsorption devices.