Spin Polarization of Nonequilibrium Conduction Electrons in Magnetic Junctions

An original equation for nonequilibrium spin polarization in magnetic junctions based on dynamic equations for magnetic moment was obtained. Spatial nonuniformity of the distribution of carriers is taken into account in the equations, and the magnetic moment is averaged over the ensemble of nonequil...

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Bibliographic Details
Published inJournal of communications technology & electronics Vol. 64; no. 12; pp. 1422 - 1430
Main Authors Vilkov, E. A., Nikitov, S. A., Logunov, M. V., Chigarev, S. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2019
Springer
Springer Nature B.V
Subjects
Communications Engineering
Conduction electrons
Electron spin
Electron transitions
Electrons
Engineering
Magnetic moments
Magnetism
Mathematical analysis
Nanoelectronics
Networks
Nonuniformity
Photon emission
Polarization (spin alignment)
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Summary:An original equation for nonequilibrium spin polarization in magnetic junctions based on dynamic equations for magnetic moment was obtained. Spatial nonuniformity of the distribution of carriers is taken into account in the equations, and the magnetic moment is averaged over the ensemble of nonequilibrium spin-injected electrons. The solution to the dynamic equations for the magnetic moment is used to estimate the probability of spin-flip electron transitions upon spin injection, and the solution to the equation for the nonequilibrium spin polarization in magnetic junctions is used to calculate frequencies of photon emission or absorption at energies corresponding to the energy of effective exchange splitting of spin subbands.
ISSN:1064-2269
1555-6557
DOI:10.1134/S1064226919100139