Spin currents and spin superfluidity
نویسندگان
چکیده
منابع مشابه
Spin currents and spin superfluidity
The present review analyzes and compares various types of dissipationless spin transport: (1) Superfluid transport, when the spin-current state is a metastable state (a local but not the absolute minimum in the parameter space). (2) Ballistic spin transport, when spin is transported without losses simply because sources of dissipation are very weak. (3) Equilibrium spin currents, i.e., genuine ...
متن کاملSpin susceptibilities, spin densities, and their connection to spin currents
We calculate the frequency-dependent spin susceptibilities for a two-dimensional electron gas with both Rashba and Dresselhaus spin-orbit interactions. The resonances of the susceptibilities depend on the relative values of the Rashba and Dresselhaus spin-orbit constants, which could be manipulated by gate voltages. We derive exact continuity equations, with source terms, for the spin density a...
متن کاملSpintronics: Taming spin currents.
T aking advantage of the fact that electrons, photons and some elementary excitations have an intrinsic angular momentum (spin) offers a fascinating opportunity to study materials properties. Introducing a net imbalance between spins pointing in different directions (say, 'up' and 'down') is one way to probe phenomena including spin–orbit and hyperfine coupling, pairing of unconventional superc...
متن کاملSpin-Currents and Spin-Pumping Forces for Spintronics
A general definition of the Spintronics concept of spin-pumping is proposed as generalized forces conjugated to the spin degrees of freedom in the framework of the theory of mesoscopic non-equilibrium thermodynamics. It is shown that at least three different kinds of spin-pumping forces and associated spin-currents can be defined in the most simple spintronics system: the Ferromagnetic/Non-Ferr...
متن کاملSpin Hall voltages from a.c. and d.c. spin currents
In spin electronics, the spin degree of freedom is used to transmit and store information. To this end the ability to create pure spin currents--that is, without net charge transfer--is essential. When the magnetization vector in a ferromagnet-normal metal junction is excited, the spin pumping effect leads to the injection of pure spin currents into the normal metal. The polarization of this sp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Physics
سال: 2010
ISSN: 0001-8732,1460-6976
DOI: 10.1080/00018731003739943