Domain wall dynamics of ferrimagnets influenced by spin current near the angular momentum compensation temperature

Spin Angular Momentum Imparted by Gravitational Waves

Following the demonstration that gravitational waves impart linear momentum, it is argued that if they are polarized they should impart angular momentum to appropriately placed 'test rods' in their path. A general formula for this angular momentum is obtained and used to provide expressions for the angular momentum imparted by plane and cylindrical gravitational waves. While the plane [1] and c...

Vector of Spin Angular Momentum

he electron is a remarkably simple particle of matter. It has mass T and an electric charge; it spins (or seems to spin) with a b e d amount of angular momentum, and it has a magnetic moment, so that an external magnetic field exerts a twisting force on it. These four quantities constitute all the known properties of the electron; once their values have been established there is nothing more to...

Spin-induced angular momentum switching.

When light is transmitted through optically inhomogeneous and anisotropic media the spatial distribution of light can be modified according to its input polarization state. A complete analysis of this process, based on the paraxial approximation, is presented, and we show how it can be exploited to produce a spin-controlled change in the orbital angular momentum of light beams propagating in pa...

Theory of current-driven domain wall motion: spin transfer versus momentum transfer.

A self-contained theory of the domain wall dynamics in ferromagnets under finite electric current is presented. The current has two effects: one is momentum transfer, which is proportional to the charge current and wall resistivity (rho(w)); the other is spin transfer, proportional to spin current. For thick walls, as in metallic wires, the latter dominates and the threshold current for wall mo...

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