Floquet Weyl states at one-photon resonance: An origin of nonperturbative optical responses in three-dimensional materials

Y Hirai, S Okumura, N Yoshikawa, T Oka… - Physical Review …, 2024 - APS
Electrons driven coherently by laser light can exhibit nonperturbative geometric effects.
Drastic deformation and gap openings of the electrons' Floquet bands occur at one-photon …

Chiral Floquet engineering on topological fermions in chiral crystals

B Fan, W Duan, A Rubio, P Tang - npj Quantum Materials, 2024 - nature.com
The interplay of chiralities in light and quantum matter provides an opportunity to design and
manipulate chirality-dependent properties in quantum materials. Herein we report the …

Anomalous Hall effect of light-driven three-dimensional Dirac electrons in bismuth

Y Hirai, N Yoshikawa, M Kawaguchi, M Hayashi… - arXiv preprint arXiv …, 2023 - arxiv.org
Recent advancement in laser technology has opened the path toward the manipulation of
functionalities in quantum materials by intense coherent light. Here, we study three …

Transverse Current Generation by Circularly Polarized Light in Terahertz-Biased Semiconductor

T Fujimoto, Y Murotani, T Tamaya, T Kurihara… - arXiv preprint arXiv …, 2024 - arxiv.org
Transverse current generation by circularly polarized light in biased matter has attracted
considerable attention for studies of Floquet engineering and inverse spin Hall effect. Field …

Floquet Engineering of Relativistic Electrons using Propagating Waves

T Oka - arXiv preprint arXiv:2407.21458, 2024 - arxiv.org
This study examines the electronic states of quantum materials influenced by waves V (Qx-
omega t) propagating through them. These waves can include laser light, polaritons …

Inverse Spin Hall Effect in Nonequilibrium Dirac Systems Induced by Anomalous Flow Imbalance

HH Teh, T Numasawa, S Okumura, T Oka - arXiv preprint arXiv …, 2024 - arxiv.org
We study Dirac fermions in the presence of a space-dependent chiral gauge field and
thermodynamic gradients, establishing a connection to the inverse spin Hall effect. The …

[HTML][HTML] Semiclassical transport in two-dimensional Dirac materials with spatially variable tilt

A Hosseinzadeh, SA Jafari - Annals of Physics, 2024 - Elsevier
We use Boltzmann theory to study the semi-classical dynamics of electrons in a two-
dimensional (2D) tilted Dirac material in which the tilt varies in space. The spatial variation of …

Floquet Engineering of 3-Dimensional Dirac Semimetals

R Shimano, Y Hirai, N Yoshikawa - Nonlinear Optics, 2023 - opg.optica.org
We investigated the light-control of topological matter phases in 3-dimensional Dirac
electron systems. Light-induced creation of chiral gauge field and also the realization of …

Semiclassical Transport in Two-Dimensional Dirac Materials with Spatially Variable Tilt

SA Jafari, A Hosseinzadeh - Available at SSRN 4895705 - papers.ssrn.com
We use Boltzmann theory to study the semi-classical dynamics of electrons in a two-
dimensional (2D) tilted Dirac material in which the tilt varies in space. The spatial variation of …

Light-induced chiral gauge field in 3D Dirac electrons in condensed matter

T Oka - APS Meeting Abstracts, 2023 - ui.adsabs.harvard.edu
The chiral gauge field (CGF) plays a crucial role in condensed matter physics, particularly in
materials known as Dirac and Weyl semimetals. Weyl semimetals arise from the breaking of …