Transport Relaxation Time of Spin-Polarized Electrons
نویسندگان
چکیده
منابع مشابه
Spin-Polarized Electrons
In numerous experiments involving electrons, the ability to manipulate the spin of the electron gives unique additional information. For many years, however, such experiments were extraordinarily rare because of the absence of a good source of spin-polarized electrons. Up to the time this paper appeared, sources of spin-polarized electrons produced electron beams of very low intensity or polari...
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Introduction Current traveling through a material can have a spin polarization; that is, there can exist more electrons in a current with spin up than spin down or vice versa. It has been discovered that a conducting or semiconducting material can be “injected” with a spinpolarized current. Passing a current through a ferromagnetic material can induce this spin-polarization, which remains as th...
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We study the spatial Fourier transform of the spin correlation function Gq(t) in paramagnetic quantum crystals by direct simulation of a 1d lattice of atoms interacting via a nearest-neighbor Heisenberg exchange Hamiltonian. Since it is not practical to diagonalize the s = 1/2 exchange Hamiltonian for a lattice which is of sufficient size to study long-wavelength (hydrodynamic) fluctuations, we...
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Prospect of building electronic devices in which electron spins store and transport information has revived interest in the spin relaxation of conduction electrons. Since spin-polarized currents cannot flow indefinitely, basic spin-electronic devices must be smaller than the distance electrons diffuse without losing its spin memory. Some recent experimental and theoretical effort has been devot...
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The spin polarization of electrons photoemitted from (110) GaAs by irradiating with circularly polarized light of energy 1.5 & heu & 3.6 eU was measured by Mott scattering. The GaAs surface was treated with cesium and oxygen to obtain a negative electron af6nity (NEA), The spectrum of spin polarization P(hem) exhibits a peak (P = 40%) at threshold arising from transitions at I, and positive (P ...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2004
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.106.69