The photoexcitation life cycle from incident photon (and creation of photoexcited electron–
hole pair) to ultimate extraction of electrical current is a complex multiphysics process …

In noncentrosymmetric materials, the responses (for example, electrical and optical)
generally depend on the direction of the external stimuli, called nonreciprocal phenomena …

Quantum geometry in condensed-matter physics has two components: the real part quantum
metric and the imaginary part Berry curvature. Whereas the effects of Berry curvature have …

Quantum geometry defines the phase and amplitude distances between quantum states.
The phase distance is characterized by the Berry curvature and thus relates to topological …

Nonlinear physics is one of the most important research fields in modern physics and
materials science. It offers an unprecedented paradigm for exploring many fascinating …

Nonlinear optical spectroscopies are powerful tools for investigating both static material
properties and light-induced dynamics. Terahertz (THz) emission spectroscopy has …

The nonlinear Hall effect with time-reversal symmetry is a second-order electronic transport
phenomenon—seen as a quadratic voltage transverse to an applied electric field—that …

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 …

Nonlinear optical materials possess wide applications, ranging from terahertz and mid-
infrared detection to energy harvesting. Recently, the correlations between nonlinear optical …

Light engineering of correlated states in topological materials provides a new avenue of
achieving exotic topological phases inaccessible by conventional tuning methods. Here we …