In quantum materials, emergent functional properties resulting from strong correlations or
electronic topology offer opportunities for new applications. Over the past decade, ultrafast …

Ferroelectrics have a spontaneous electrical polarization that is arranged into domains and
can be reversed by an externally-applied field. This high versatility makes them useful in …

Abstract Domain switching is crucial for achieving desired functions in ferroic materials that
are used in various applications. Fast control of domains at sub‐nanosecond timescales …

Ultrafast stimuli can stabilize metastable states of matter inaccessible by equilibrium means.
Establishing the spatiotemporal link between ultrafast excitation and metastability is crucial …

Ultrashort light pulses induce rapid deformations of crystalline lattices. In ferroelectrics,
lattice deformations couple directly to the polarization, which opens the perspective to …

We investigate the role of polarization-photon coupling (specifically, the polarization-
oscillation-induced radiation electric field) in the excitation of ferroelectric thin films by an …

Stacking nonpolar, monolayer materials has emerged as an effective strategy to harvest
ferroelectricity in two-dimensional (2D) van der Waals (vdW) materials. At a particular …

The X-ray free-electron laser of the Pohang Accelerator Laboratory (PAL-XFEL) was opened
to users in 2017. Since then, significant progress has been made in PAL-XFEL operation …

Many functional and quantum materials derive their functionality from the responses of both
their electronic and lattice subsystems to thermal, electric, and mechanical stimuli or light …

We reveal a photoinduced control of ferroelectricity in hybrid-improper ferroelectric
superlattices, using ab initio theory. Along with a notable photostriction effect, thermalized …