4 papers
Kondo Effect in Nonreciprocal Response
Hajime Murata, Hiroaki Ishizuka
Chiral magnetic states give rise to rich phenomena, from the anomalous Hall effect and the nonlinear electrical current to multiferroics and magnetochiral dichroism. Most of the st…
Controlling resonant spin photocurrent using magnetic field; application to a magnetoelectric oxide Cr2O3
Zhuo-Cheng Gu, Hiroaki Ishizuka
We study the magnon spin photocurrent in effective spin models for Cr2O3, a material known for its magnetoelectric effect. Using nonlinear response theory, we show that magnon spin…
Sign-reversal and non-monotonicity of chirality-related anomalous Hall effect in highly conductive metals
Ryunosuke Terasawa, Masafumi Udagawa, Hiroaki Ishizuka
The non-monotonic temperature dependence and sign reversal of chirality-related anomalous Hall effect in highly conductive metals are studied. Through the analysis of scattering ra…
Anomalous enhancement of large-momentum scattering by electron-electron interaction in moiré superlattices
Taiki Sato, Hiroaki Ishizuka
Using a microscopic model, we show that the electron-electron interaction of flat bands deviates significantly from the Coulomb interaction. In particular, we find that large-momen…