7 citations · 11 across the 2 of their papers we have counts for
6 papers
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 inter…
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…
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…
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…