1 citations · 1 across the 4 of their papers we have counts for
6 papers
Nonlocal current-response theory of structured-light dichroism
Akihito Kato, Nobuhiko Yokoshi
We develop a nonlocal minimal-coupling theory of structured-light dichroism. Optical absorption is written as a bilinear functional of the incident vector potential and the nonloca…
Optical vortex probe of loop-current chirality in moiré materials
Nobuhiko Yokoshi, Akihito Kato
We propose a symmetry-resolved optical probe of intrinsic loop-current chirality in moiré materials, with twisted bilayer graphene as a representative realization. Interlayer inte…
Microscopic Theory of Chiral-Phonon-Induced Orbital Selectivity in Helical Crystals
Tomomi Tateishi, Akihito Kato, Alexander S. Ovchinnikov +1
We present a microscopic theory of chirality-induced orbital selectivity (CIOS) in helical crystals, in which truly chiral phonons selectively transfer angular momentum to electron…
Effective electron coupling to phonon mechanical angular momentum in helical systems
Akihito Kato, Nobuhiko Yokoshi, Jun-ichiro Kishine
In chiral crystals, two types of phonon angular momenta have been introduced. One is crystal angular momentum (CAM) arising from the rotational or screw-rotational symmetry and the…
Electron-Chiral Phonon Coupling, Crystal Angular Momentum, and Phonon Chirality
Tomomi Tateishi, Akihito Kato, Jun-ichiro Kishine
We explicitly derive the wavefunctions of chiral phonons propagating along the helical axis in chiral crystals and clarify the characteristics of electron-phonon interactions in ch…
Description of molecular chirality and its analysis with high harmonic generation
Akihito Kato, Nobuhiko Yokoshi
To clarify the microscopic origin of chirality-induced optical effect, we develop an analytical method that extracts the chiral part of the Hamiltonian of molecular electronic stat…