7 citations · 12 across the 6 of their papers we have counts for
4 papers · 1 filter
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…