255 citations · 439 across the 11 of their papers we have counts for
11 papers
Microscopic Origin of Dephasing in Solids from First-Principles Electron-Phonon Interactions
Atsushi Yamada, Kazuhiro Yabana
Electron-phonon interactions provide a microscopic origin of effective dephasing in solids within real -time TDDFT via a time-domain Williams-Lax framework. In metals, Drude -like…
Ultrafast Optical Control of Multi-Valley States in 2D SnS
Arqum Hashmi, M. Umar Farooq, Mizuki Tani +3
We theoretically study the ultrafast optical control of multiple valley states in two-dimensional (2D) tin sulfide (SnS) monolayers, a member of the layered group-IV monochalcogeni…
Strong Field Optical Hall Effect in 2D Weyl Semimetal
M. Umar Farooq, Arqum Hashmi, Mizuki Tani +4
The study of interplay between the geometric nature of Bloch electrons and transverse responses under strong field offers new opportunities for optoelectronic applications. Here, w…
Wide-bandgap optical materials for high-harmonics generation at the nanoscale
Albert Mathew, Sergey Kruk, Shunsuke Yamada +2
High-order harmonics generation (HHG) is the only process that enables table-top-size sources of extreme-ultraviolet (XUV) light. The HHG process typically involves light interacti…
Interaction of intense ultrashort laser pulses with solid targets: A systematic analysis using first-principles calculations
Atsushi Yamada, Kazuhiro Yabana
Intense ultrashort laser pulse irradiation of solid targets was systematically investigated at the first-principles level, both theoretically and computationally. In the method, th…
Theory for the electron excitation in dielectrics under an intense circularly polarized laser field
T. Otobe, Y. Shinohara, S. A. Sato +1
We report a Keldysh-like model for the electron transition rate in dielectrics under an intense circularly polarized laser. We assume a parabolic two-band system and the Houston fu…
Femtosecond time-resolved dynamical Franz-Keldysh effect
T. Otobe, Y. Shinohara, S. A. Sato +1
We theoretically investigate the dynamical Franz-Keldysh effect in femtosecond time resolution, that is, the time-dependent modulation of a dielectric function at around the band g…
Time-dependent density functional theory of high-intensity, short-pulse laser irradiation on insulators
S. A. Sato, K. Yabana, Y. Shinohara +3
We calculate the energy deposition by very short laser pulses in SiO_2 (alpha-quartz) with a view to establishing systematics for predicting damage and nanoparticle production. The…
Dielectric response of laser-excited silicon at finite electron temperature
S. A. Sato, Y. Shinohara, T. Otobe +1
We calculate the dielectric response of excited crystalline silicon in electron thermal equilibrium by adiabatic time-dependent density functional theory (TDDFT) to model the respo…
Time-dependent density functional theory for strong electromagnetic fields in crystalline solids
K. Yabana, T. Sugiyama, Y. Shinohara +2
We apply the coupled dynamics of time-dependent density functional theory and Maxwell equations to the interaction of intense laser pulses with crystalline silicon. As a function o…
Ab initio theory of coherent phonon generation by laser excitation
Y. Shinohara, Y. Kawashita, K. Yabana +3
We show that time-dependent density functional theory (TDDFT) is applicable to coherent optical phonon generation by intense laser pulses in solids. The two mechanisms invoked in p…