Effects of a magnetic field on electron-phonon scattering in quantum wires

1993 ◽  
Vol 48 (24) ◽  
pp. 18002-18009 ◽  
Author(s):  
N. Telang ◽  
S. Bandyopadhyay
Keyword(s):  
Magnetic Field ◽  
Phonon Scattering ◽  
Quantum Wires ◽  
Electron Phonon Scattering

Modeling the fs Demagnetization: Laser-Induced Reversal in an Applied Magnetic Field

2006 ◽  
Vol 941 ◽  
Author(s):  
Francesco Dalla Longa ◽  
Dion Boesten ◽  
Harm H.J.E. Kicken ◽  
Wim J.M. de Jonge ◽  
Bert Koopmans
Keyword(s):  
Magnetic Field ◽  
Curie Temperature ◽  
Applied Field ◽  
Phonon Scattering ◽  
Magnetic System ◽  
Ultrafast Laser ◽  
Direct Relation ◽  
Magnetization Dynamics ◽  
Novel Model ◽  
Electron Phonon Scattering

ABSTRACTA novel model for ultrafast laser-induced magnetization dynamics is analyzed. Equilibration of the magnetic system is described by including electron-phonon scattering events with a finite spin flip probability. Recently, we demonstrated that such a model predicts a direct relation between the demagnetization time and the Gilbert damping. Here we present numerical simulations based on the same Hamiltonian, but including the presence of an external applied field. Thereby, reversal of the magnetization after heating above the Curie temperature (Tc) can be modeled. We demonstrate that magnetization reversal can be achieved even if the lattice temperature stays below Tc.

Electron-phonon scattering and conductivity of a quantum cylinder in a magnetic field

2011 ◽  
Vol 53 (8) ◽  
pp. 1707-1713 ◽  
Author(s):  
P. A. Eminov ◽  
A. A. Ul’din ◽  
Yu. I. Sezonov
Keyword(s):  
Magnetic Field ◽  
Phonon Scattering ◽  
Electron Phonon Scattering

Electron-phonon scattering rates in quantum wires

1993 ◽  
Vol 48 (8) ◽  
pp. 5700-5703 ◽  
Author(s):  
P. A. Knipp ◽  
T. L. Reinecke
Keyword(s):  
Phonon Scattering ◽  
Quantum Wires ◽  
Electron Phonon Scattering ◽  
Scattering Rates

SCATTERING TIME ENGINEERING IN QUANTUM-BASED ELECTRONIC DEVICES

1998 ◽  
Vol 09 (01) ◽  
pp. 125-144
Author(s):  
JEAN-PIERRE LEBURTON
Keyword(s):  
Quantum Dot ◽  
Phonon Scattering ◽  
Quantum Wires ◽  
Differential Resistance ◽  
One Dimensional ◽  
Linear Chains ◽  
Low Dimensionality ◽  
Scattering Time ◽  
Hopping Conductance ◽  
Electron Phonon Scattering

The interplay between geometrical confinement and materials considerations can efficiently reduce phonon-assisted transport, enabling scattering time and dissipation engineering in quantum devices. In resonant tunneling (RT) structures, quenching of phonon-assisted transmission leading to considerable reduction of the off-resonance valley-current is shown to occur in interband devices. In structures of low dimensionality such as quantum wires, electron-phonon scattering exhibits size effects and intersubband resonances which modulates the drift velocity and conductance of one-dimensional systems. Quantum dot nanostructures offer large flexibility for reduction and modulation of dissipative processes such as oscillatory hopping conductance induced by acoustic phonons in linear chains of quantum dots or negative differential resistance curve shaping in RT through quantum dot arrays.

Electron-phonon scattering rates in quantum wires

1994 ◽  
Vol 37 (4-6) ◽  
pp. 1105-1108 ◽  
Author(s):  
P.A. Knipp ◽  
T.L. Reinecke
Keyword(s):  
Phonon Scattering ◽  
Quantum Wires ◽  
Electron Phonon Scattering ◽  
Scattering Rates
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