Electron-acoustic-phonon scattering mechanisms at low temperatures in semiconductors

1970 ◽  
Vol 4 (25) ◽  
pp. 1179-1184 ◽  
Author(s):  
M. Costato ◽  
L. Reggiani
Keyword(s):  
Low Temperatures ◽  
Acoustic Phonon ◽  
Phonon Scattering ◽  
Scattering Mechanisms ◽  
Electron Acoustic

Conductivity Tensor in Cylindrical Quantum Wire with Parabolic Potential for the Case of Electron-Acoustic Phonon Scattering

2022 ◽  
Vol 1048 ◽  
pp. 205-211
Author(s):  
Hoang Van Ngoc
Keyword(s):  
External Field ◽  
Quantum Wire ◽  
Acoustic Phonon ◽  
Phonon Scattering ◽  
Quantum Wires ◽  
Kinetic Equations ◽  
Conductivity Tensor ◽  
Field Frequency ◽  
Parabolic Potential ◽  
Electron Acoustic

Conductivity tensor is an important concept in materials, this work studies conductivity tensors in cylindrical quantum wires with parabolic potential in the presence of two external fields, a linearly polarized electromagnetic wave, and a laser field. This work is also only considered for the case of electron-acoustic phonon scattering. Research results are obtained by using quantum kinetic equations for the carrier system in a quantum wire. The conductivity tensor is calculated by solving the quantum kinetic equation of the system, which is a function of the external field frequency, the external field amplitude, the temperature of the helium, and parameters specific to the quantum wire. Results will also be examined and plotted for quantum wire GaAs / GaAsAl.

Electron–acoustic-phonon scattering rates in cylindrical quantum wires

1995 ◽  
Vol 51 (7) ◽  
pp. 4695-4698 ◽  
Author(s):  
SeGi Yu ◽  
K. W. Kim ◽  
Michael A. Stroscio ◽  
G. J. Iafrate
Keyword(s):  
Acoustic Phonon ◽  
Phonon Scattering ◽  
Quantum Wires ◽  
Electron Acoustic ◽  
Scattering Rates

Electron–acoustic-phonon scattering rates in rectangular quantum wires

1994 ◽  
Vol 50 (3) ◽  
pp. 1733-1738 ◽  
Author(s):  
SeGi Yu ◽  
K. W. Kim ◽  
Michael A. Stroscio ◽  
Gerald J. Iafrate ◽  
Arthur Ballato
Keyword(s):  
Acoustic Phonon ◽  
Phonon Scattering ◽  
Quantum Wires ◽  
Electron Acoustic ◽  
Rectangular Quantum Wires ◽  
Scattering Rates

scholarly journals Analysis of the Effect of Resonant Phonon Scattering on the Thermal Conductivity of CaF2

1976 ◽  
Vol 29 (2) ◽  
pp. 19 ◽  
Author(s):  
PRW Hudson ◽  
EE Gibbs
Keyword(s):  
Thermal Conductivity ◽  
Low Temperatures ◽  
Phonon Scattering ◽  
Low Frequency ◽  
Resonant Scattering ◽  
Boundary Scattering ◽  
Scattering Mechanism ◽  
Scattering Mechanisms ◽  
Phonon Conduction

An analysis is presented of the various phonon contributions to the thermal conductivity of CaF2 doped with 1�0% and 0�1 % of yttrium or thulium. The broad phonon resonant scattering term is found to reduce the low frequency phonon conduction significantly. This is responsible for the relatively stronger suppression of the conductivity at low temperatures in the phonon boundary scattering region. Thus broad quasilocalized phonon resonant scattering mechanisms have a similar effect to phonon precipitate scattering. It also follows that, in the case of a broad resonant scattering mechanism, a dip will not necessarily be seen in the conductivity.

One-dimensional cylindrical quantum wire: The theoretical study of photo-stimulated Ettingshausen effect

2021 ◽  
Author(s):  
Hoang Van Ngoc ◽  
Nguyen Quang Bau ◽  
Doan Minh Quang ◽  
Tran Hai Hung
Keyword(s):  
Magnetic Field ◽  
Optical Phonon ◽  
Quantum Wire ◽  
Acoustic Phonon ◽  
Phonon Scattering ◽  
Resonance Effect ◽  
One Dimensional ◽  
Ettingshausen Effect ◽  
Electron Acoustic ◽  
The Impact

Based on the quantum kinetic equation (QKE) for electron, we have theoretically studied the theory of photo-stimulated Ettingshausen effect in a one-dimensional cylindrical quantum wire (CQW). The strong electromagnetic wave (EMW) [Formula: see text] plays a role as photo-stimulation source. We obtain the analytic expressions for the kinetic tensors [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and the Ettingshausen coefficient (EC) in the CQW with the dependence on the amplitude and the energy of EMW, the CQW radius, the magnetic field and the temperature for two cases: optical phonon and acoustic phonon. The results are numerically evaluated and graphed for GaAs/AlGaAs CQW model. It is shown that we observe the cyclotron resonance and magneto-phonon resonance effect while surveying EC in terms of magnetic field (with and without EMW) and EMW energy, considered the electron-optical phonon scattering. In case of electron-acoustic phonon scattering, the oscillation of EC is obtained with the transition between low Landau levels (LLs). We also clarify the impact of quantum size effect (QSE) on EC by surveying the influence of EC on the radius of CQW.

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