Thursday, October 4, 2012

1210.1090 (P. A. Andreev et al.)

Waves of spin-current in magnetized dielectrics    [PDF]

P. A. Andreev, L. S. Kuz'menkov
Spin-current is the important physical quantity in present day spintronics and it might be very usefull in the physics of quantum plasma of spinning particles. Thus it is important to have an equation of spin-current dynamical evolution. This equation naturally appears as a part of a set of the quantum hydrodynamics (QHD) equations. Consequently, we present the set of the QHD equations derived from the many-particle microscopic Schrodinger equation, which consists of the continuity equation, the Euler equation, the Bloch equation and equation of spin-current evolution. We use these equations to study dispersion of collective excitations in three dimensional samples of magnetized dielectrics. We show that dynamics of spin-current leads to formation of new type of collective excitations in magnetized dielectrics, which we called spin-current waves.
View original: http://arxiv.org/abs/1210.1090

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