Quantum cascade lasers are unipolar semiconductor lasers covering a wide range of the
infrared and terahertz spectrum. Lasing action is achieved by using optical intersubband …

Recently, the semiclassical theory of the anomalous Hall effect induced by the Berry
curvature in Bloch bands has been introduced. The theory operates only with gauge …

Spintronics refers commonly to phenomena in which the spin of electrons in a solid state
environment plays the determining role. In a more narrow sense spintronics is an emerging …

The present review analyses and compares various types of dissipationless spin
transport:(1) Superfluid transport, when the spin-current state is a metastable state (a local …

We develop a theory of extrinsic spin currents in semiconductors, resulting from spin-orbit
coupling at charged scatterers, which leads to skew-scattering and side-jump contributions …

Though the concept of Berry force was proposed thirty years ago, little is known about the
practical consequences of this force as far as chemical dynamics are concerned. Here, we …

We find that in order to completely describe the spin transport, apart from spin current (or
linear spin current), one has to introduce the angular spin current. The two spin currents …

In the spin Hall effect, a current passed through a spin–orbit coupled electron gas induces a
spin accumulation of inverse sign on either side of the sample. A number of possible …

We introduce the concept of bond spin currents, which describe the spin transport between
two sites of the lattice model of a multiterminal spin-orbit (SO) coupled semiconductor …

We propose an optical means to realize the spin-Hall effect (SHE) in a neutral atomic system
by coupling the internal spin states of atoms to radiation. The interaction between the …