Zobrazeno 1 - 10
of 380
pro vyhledávání: '"Ishikawa, Kenichi"'
Autor:
Farooq, M. Umar, Hashmi, Arqum, Tani, Mizuki, Yabana, Kazuhiro, Ishikawa, Kenichi L., Huang, Li, Otobe, Tomohito
The study of interplay between the geometric nature of Bloch electrons and transverse responses under strong field offers new opportunities for optoelectronic applications. Here, we present a comprehensive study of the strong-field response of Weyl D
Externí odkaz:
http://arxiv.org/abs/2407.00974
We report a theoretical investigation of photoionization by a pair of coherent, ultrashort fundamental and second-harmonic extreme-ultraviolet pulses, where the photon energies are selected to yield the same photoelectron energy for ionization of two
Externí odkaz:
http://arxiv.org/abs/2310.08330
We present an implementation of the multiconfiguration time-dependent Hartree-Fock method based on the adaptive finite element method for molecules under intense laser pulses. For efficient simulations, orbital functions are propagated by a stable pr
Externí odkaz:
http://arxiv.org/abs/2301.02387
We review time-dependent multiconfiguration self-consistent-field (TD-MCSCF) method and time-dependent optimized coupled-cluster (TD-OCC) method for first-principles simulations of high-field phenomena such as tunneling ionization and high-order harm
Externí odkaz:
http://arxiv.org/abs/2211.10116
We report the formulation of a new, cost-effective approximation method in the time-dependent optimized coupled-cluster (TD-OCC) framework [T. Sato et al., J. Chem. Phys. 148, 051101 (2018)] for first-principles simulations of multielectron dynamics
Externí odkaz:
http://arxiv.org/abs/2208.05455
We theoretically investigate the optical energy absorption of crystalline silicon subject to dual-color femtosecond laser pulses, using the time-dependent density functional theory (TDDFT). We employ the modified Becke-Johnson (mBJ) exchange-correlat
Externí odkaz:
http://arxiv.org/abs/2205.15625
When graphene is exposed to a strong few-cycle optical field, a directional electric current can be induced depending on the carrier-envelope phase of the field. This phenomenon has successfully been explained by the charge dynamics in reciprocal spa
Externí odkaz:
http://arxiv.org/abs/2111.15305
Autor:
Katow, Hiroki, Ishikawa, Kenichi L.
Recent developments of ultrafast laser pulse techniques enable us to study the subpicosecond scale dynamics out of thermal equilibrium. Multiple temperature models are frequently used to describe such dynamics where the total system is divided into s
Externí odkaz:
http://arxiv.org/abs/2109.04334
Publikováno v:
Phys. Rev. A 104, 043104 (2021)
We present an implementation of a time-dependent multiconfiguration self-consistent-field (TD-MCSCF) method [R. Anzaki et al., Phys. Chem. Chem. Phys. 19, 22008 (2017)] with the full configuration interaction expansion for coupled electron-nuclear dy
Externí odkaz:
http://arxiv.org/abs/2106.14777
Publikováno v:
Phys. Rev. B 104, 075157 (2021)
We propose a semi-classical approach based on the Vlasov equation to describe the time-dependent electronic dynamics in a bulk simple metal under an ultrashort intense laser pulse. We include in the effective potential not only the ionic Coulomb pote
Externí odkaz:
http://arxiv.org/abs/2105.08212