Floquet engineering, the control of quantum systems using periodic driving, is an old
concept in condensed matter physics dating back to ideas such as the inverse Faraday …

We review recent developments in the research of nonlinear and nonequilibrium
phenomena in solids focusing on their geometrical aspects. We start with introducing the …

Controlling electric and magnetic properties of matter by laser beams is actively explored in
the broad region of condensed matter physics, including spintronics and magneto-optics …

We investigate an unconventional symmetry in time-periodically driven systems, the Floquet
dynamical symmetry (FDS). Unlike the usual symmetries, the FDS gives symmetry sectors …

We propose an ultrafast way to generate spin chirality and spin current in a class of
multiferroic magnets using a terahertz circularly polarized laser. Using the Floquet formalism …

Scalar spin chirality, a three-body spin correlation that breaks time-reversal symmetry, is
revealed to couple directly to circularly polarized laser. This is shown by the Floquet …

We introduce the concept of Floquet topological magnons—a mechanism by which a
synthetic tunable Dzyaloshinskii–Moriya interaction (DMI) can be generated in quantum …

Nonequilibrium steady states (NESSs) in periodically driven dissipative quantum systems
are vital in Floquet engineering. We develop a general theory for high-frequency drives with …

Recent observations of topological spin textures brought spintronics one step closer to new
magnetic memories. Nevertheless, the existence of Skyrmions, as well as their stabilization …

We demonstrate that laser excitations can coherently induce a novel Kondo effect in
ultracold atoms in optical lattices. Using a model of alkaline-earth fermions with two orbitals …