The introduction of the concept of topology into condensed matter physics has greatly
deepened our fundamental understanding of transport properties of electrons as well as all …

Ferroelectricity, band topology, and superconductivity are respectively local, global, and
macroscopic properties of quantum materials, and understanding their mutual couplings …

Based on the first-principles prediction, we report the magnetoelectric coupling effect in two-
dimensional multiferroic bilayer VS 2. The ground-state 3 R-type stacking breaks space …

The Berry curvature dipole (BCD) is a key parameter that describes the geometric nature of
energy bands in solids. It defines the dipole-like distribution of Berry curvature in the band …

Nonvanishing Berry curvature dipole (BCD) and persistent spin texture (PST) are intriguing
physical manifestations of electronic states in noncentrosymmetric 2D materials. The former …

We theoretically investigate an intrinsic nonlinear anomalous Hall effect (INAHE) in space-
time (PT) symmetric antiferromagnetic metals. The INAHE is characterized by an asymmetric …

We elucidate a bias-free light-induced orbital and spin current through nonlinear response
theory, which generalizes the well-known bulk photovoltaic effect in centrosymmetric broken …

We present a new software module, QRCODE (Quantum Research for Calculating Optically
Driven Excitations), for massively parallelized real-time time-dependent density functional …

We propose a systematic analysis method for identifying essential parameters in various
linear and nonlinear response tensors without which they vanish. By using the Keldysh …