Macroscopic kinematics of the Hall electric field under influence of carrier magnetic moments
Abstract
The relativistic effect on electromagnetic forces yields two types of forces which depend on the velocity of the relevant particles: (i) the usual Lorentz force exerted on a moving charged particle and (ii) the apparent Lorentz force exerted on a moving magnetic moment. In sharp contrast with type (i), the type (ii) force originates due to the transverse field induced by the Hall effect (HE). This study incorporates both forces into a Drudetype equation with a fully spinpolarized condition to investigate the effects of selfconsistency of the source and the resultant fields on the HE. We also examine the selfconsistency of the carrier kinematics and electromagnetic dynamics by simultaneously considering the Drude type equation and Maxwell equations at low frequencies. Thus, our approach can predict both the dc and ac characteristics of the HE, demonstrating that the dc current condition solely yields the ordinary HE, while the ac current condition yields generation of both fundamental and second harmonic modes of the HE field. When the magnetostatic field is absent, the simultaneous presence of dc and ac longitudinal currents generates the ac HE that has both fundamental frequency and second harmonic.
 Authors:
 Division of Material Science, Graduate School of Science and Engineering, Saitama University, 255 ShimoOkubo, Sakuraku, Saitama 3388570 (Japan)
 Publication Date:
 OSTI Identifier:
 22611558
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CARRIERS; CHARGED PARTICLES; CURRENTS; ELECTRIC FIELDS; HALL EFFECT; LORENTZ FORCE; MAGNETIC MOMENTS; MAXWELL EQUATIONS; RELATIVISTIC RANGE; SPIN; SPIN ORIENTATION; VELOCITY
Citation Formats
Sakai, Masamichi, Email: sakai@fms.saitamau.ac.jp. Macroscopic kinematics of the Hall electric field under influence of carrier magnetic moments. United States: N. p., 2016.
Web. doi:10.1063/1.4954808.
Sakai, Masamichi, Email: sakai@fms.saitamau.ac.jp. Macroscopic kinematics of the Hall electric field under influence of carrier magnetic moments. United States. doi:10.1063/1.4954808.
Sakai, Masamichi, Email: sakai@fms.saitamau.ac.jp. 2016.
"Macroscopic kinematics of the Hall electric field under influence of carrier magnetic moments". United States.
doi:10.1063/1.4954808.
@article{osti_22611558,
title = {Macroscopic kinematics of the Hall electric field under influence of carrier magnetic moments},
author = {Sakai, Masamichi, Email: sakai@fms.saitamau.ac.jp},
abstractNote = {The relativistic effect on electromagnetic forces yields two types of forces which depend on the velocity of the relevant particles: (i) the usual Lorentz force exerted on a moving charged particle and (ii) the apparent Lorentz force exerted on a moving magnetic moment. In sharp contrast with type (i), the type (ii) force originates due to the transverse field induced by the Hall effect (HE). This study incorporates both forces into a Drudetype equation with a fully spinpolarized condition to investigate the effects of selfconsistency of the source and the resultant fields on the HE. We also examine the selfconsistency of the carrier kinematics and electromagnetic dynamics by simultaneously considering the Drude type equation and Maxwell equations at low frequencies. Thus, our approach can predict both the dc and ac characteristics of the HE, demonstrating that the dc current condition solely yields the ordinary HE, while the ac current condition yields generation of both fundamental and second harmonic modes of the HE field. When the magnetostatic field is absent, the simultaneous presence of dc and ac longitudinal currents generates the ac HE that has both fundamental frequency and second harmonic.},
doi = {10.1063/1.4954808},
journal = {AIP Advances},
number = 6,
volume = 6,
place = {United States},
year = 2016,
month = 6
}

THE INFLUENCE OF THE ANOMALOUS MAGNETIC MOMENT ON THE SPIN KINEMATICS OF ELECTRONS IN A UNIFORM MAGNETIC FIELD
The influence of a uniform magnetic field on thc spin orientation of electrons, or other spin 1/2 particles, in a beam is computed by assuming that the DiracPauli equation correctly represents the electrons having anomalous magnetic moment. It is shown that, when the fieid is orthogonal to the electron beam, the anomalous magnetic moment causes the spin to turn about the field direction faster than in the normal condition. This effect depends on the energy of the electrons and becomes particularly large for energies which are high compared with the rest mass: for about 250 Mev energies a half circlemore » 
Photogenerated carrier dynamics under the influence of electric fields in IIIV semiconductors
We present a rigorous analysis of the effects of electric fields on timeresolved photoluminescence spectra in semiconductors. It is based on the solution of the semiconductor transport equations using the driftdiffusion approxmation. The results show that the effect of the field alone on the photoluminescence decay can be distinguished from that of charge separation and fieldenhanced surface recombination. The analysis is applied to two different sets of experiments. In the first, we use femtosecond luminescence upconversion to observe the ultrafast charge separation in the spacecharge region, and screening of the electric field under highinjection conditions. The second group of experimentsmore » 
Generation of macroscopic magneticfieldaligned electric fields by the convection surge ion acceleratiom mechanism
The convection surge'' computer model presented previously (concerning the dramatic, nonadiabatic, magneticfieldaligned energization of ions near the Earth's geosynchronous orbit in the presence of strong, transient, magneticfieldperpendicular inductive electric fields) has been extended to include the selfconsistent generation of magneticfieldaligned electric fields. The fieldaligned electric potential is obtained by imposing the quasineutrality condition using approximated electron distribution forms. The ions are forced to respond selfconsistently to this potential. It is found that fieldaligned potential drops up to 1 to 10 kV can be generated depending on electron temperatures and on the mass species of the ions. During transient periods ofmore »