Electron interaction with confined acoustic phonons in quantum wires subjected to a magnetic field

1998 ◽  
Vol 57 (8) ◽  
pp. 4687-4693 ◽  
Author(s):  
A. Svizhenko ◽  
A. Balandin ◽  
S. Bandyopadhyay ◽  
M. A. Stroscio
Keyword(s):  
Magnetic Field ◽  
Quantum Wires ◽  
Electron Interaction ◽  
Acoustic Phonons

Erratum: Electron interaction with confined acoustic phonons in quantum wires subjected to a magnetic field [Phys. Rev. B57, 4687 (1998)]

1998 ◽  
Vol 58 (15) ◽  
pp. 10065-10065
Author(s):  
A. Svizhenko ◽  
A. Balandin ◽  
S. Bandyopadhyay ◽  
M. A. Stroscio
Keyword(s):  
Magnetic Field ◽  
Quantum Wires ◽  
Electron Interaction ◽  
Acoustic Phonons

Electron interaction with confined acoustic phonons in cylindrical quantum wires via deformation potential

1996 ◽  
Vol 80 (5) ◽  
pp. 2815-2822 ◽  
Author(s):  
SeGi Yu ◽  
K. W. Kim ◽  
Michael A. Stroscio ◽  
G. J. Iafrate ◽  
Arthur Ballato
Keyword(s):  
Quantum Wires ◽  
Electron Interaction ◽  
Deformation Potential ◽  
Acoustic Phonons

One phonon resonant Raman scattering in semiconductor quantum wires: Magnetic field effect

2013 ◽  
Vol 410 ◽  
pp. 126-130 ◽  
Author(s):  
Re. Betancourt-Riera ◽  
Ri. Betancourt-Riera ◽  
J.M. Nieto Jalil ◽  
R. Riera
Keyword(s):  
Magnetic Field ◽  
Raman Scattering ◽  
Field Effect ◽  
Quantum Wires ◽  
Magnetic Field Effect ◽  
Resonant Raman ◽  
Resonant Raman Scattering

Vertically coupled quantum wires in a longitudinal magnetic field

2007 ◽  
Vol 90 (13) ◽  
pp. 132108 ◽  
Author(s):  
Lev G. Mourokh ◽  
Anatoly Yu. Smirnov ◽  
Saskia F. Fischer
Keyword(s):  
Magnetic Field ◽  
Longitudinal Magnetic Field ◽  
Quantum Wires

Theoretical Investigation of the Shubnikov-de Haas Magnetoresistance Oscillations in a Quantum well under the Influence of Confined Acoustic Phonons

2018 ◽  
Vol 783 ◽  
pp. 1-11
Author(s):  
Le Thai Hung ◽  
Pham Ngoc Thang ◽  
Nguyen Quang Bau
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Phonon Confinement ◽  
Acoustic Phonons ◽  
Magnetic Impedance ◽  
Magnetoresistance Oscillations ◽  
The Magnetic Field ◽  
Amplitude Decrease ◽  
Theoretical Results ◽  
Phonon Confinement Effect

The Shubnikov – de Haas magnetoresistance oscillations in the Quantum well (QW) under the influence of confined acoustic phonons, The theoretical results show that the conductivity tensor, the complex magnetic impedance of the magnetic field, the frequency, the amplitude of the laser radiation, the QW width, the temperature of the system and especially the quantum index m characterizes the confinement of the phonon. The amplitude of the oscillations of the Shubnikov-de Haas impedance decreases with the increase of the influence of the confined acoustic phonons. The results for bulk phonons in a QW could be achieved, when m goes to zero. We has been compared with other studies when perform the numerical calculations are also achieved for the GaAs/AlGaAs in the QW. Results show that The Shubnikov-de Haas magnetoresistance oscillations amplitude decrease when phonon confinement effect increasing and when width L of the QW increases to a certain value, The Shubnikov – de Haas magnetoresistance oscillations amplitude completely disappears can not be observed.

scholarly journals Magnetic field induced shell-to-core confinement transition in type-II semiconductor quantum wires

2013 ◽  
Vol 113 (15) ◽  
pp. 153710 ◽  
Author(s):  
R. Macêdo ◽  
J. Costa e Silva ◽  
A. Chaves ◽  
G. A. Farias ◽  
R. Ferreira
Keyword(s):  
Magnetic Field ◽  
Quantum Wires ◽  
Type Ii

Electronic properties of semiconductor quantum wires for shallow symmetric and asymmetric confinements

2021 ◽  
Author(s):  
Irina I. Yakimenko ◽  
Ivan P. Yakimenko
Keyword(s):  
Electron Transport ◽  
Density Functional ◽  
Quantum Wires ◽  
Zero Magnetic Field ◽  
Electron Interaction ◽  
Spin Polarized ◽  
Quantum Point ◽  
Dimensional Electron Gas ◽  
The One ◽  
Quantum Technology

Abstract Quantum wires (QWs) and quantum point contacts (QPCs) have been realized in GaAs/AlGaAs heterostructures in which a two-dimensional electron gas (2DEG) resides at the interface between GaAs and AlGaAs layered semiconductors. The electron transport in these structures has previously been studied experimentally and theoretically, and a 0.7 conductance anomaly has been discovered. The present paper is motivated by experiments with a QW in shallow symmetric and asymmetric confinements that have shown additional conductance anomalies at zero magnetic field. The proposed device consists of a QPC that is formed by split gates and a top gate between two large electron reservoirs. This paper is focused on the theoretical study of electron transport through a wide top-gated QPC in a low-density regime and is based on density functional theory. The electron-electron interaction and shallow confinement make the splitting of the conduction channel into two channels possible. Each of them becomes spin-polarized at certain split and top gates voltages and may contribute to conductance giving rise to additional conductance anomalies. For symmetrically loaded split gates two conduction channels contribute equally to conductance. For the case of asymmetrically applied voltage between split gates conductance anomalies may occur between values of 0.25(2e2/h) and 0.7(2e2/h) depending on the increased asymmetry in split gates voltages. This corresponds to different degrees of spin-polarization in the two conduction channels that contribute differently to conductance. In the case of a strong asymmetry in split gates voltages one channel of conduction is pinched off and just the one remaining channel contributes to conductance. We have found that on the perimeter of the anti-dot there are spin-polarized states. These states may also contribute to conductance if the radius of the anti-dot is small enough and tunnelling between these states may occur. The spin-polarized states in the QPC with shallow confinement tuned by electric means may be used for the purposes of quantum technology.

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