scholarly journals High Temperature Quantum Kinetic Effects in Silicon Nanosandwiches

2018 ◽  
Vol 52 (4) ◽  
pp. 473
Author(s):  
N.T. Bagraev ◽  
L.E. Klyachkin ◽  
V.S. Khromov ◽  
A.M. Malyarenko ◽  
V.A. Mashkov ◽  
...  
Keyword(s):  
High Temperature ◽  
Quantum Wells ◽  
Sandwich Structure ◽  
Quantum Hall ◽  
Electron Interaction ◽  
Semiconductor Quantum Wells ◽  
Spin Dependent Transport ◽  
Composite Bosons ◽  
Kinetic Effects ◽  
Dependent Transport

AbstractThe negative- U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the electron-electron interaction. The aforesaid promotes also the creation of composite bosons and fermions by the capture of single magnetic flux quanta on the edge channels under the conditions of low sheet density of carriers, thus opening new opportunities for the registration of the high temperature de Haas-van Alphen, 300 K, quantum Hall, 77 K, effects as well as quantum conductance staircase in the silicon sandwich structure.

Spin-dependent transport and spin polarization in coupled quantum wells

2008 ◽  
Vol 104 (6) ◽  
pp. 064321
Author(s):  
Genhua Liu ◽  
Yonghai Chen ◽  
Yu Liu ◽  
Caihong Jia ◽  
Zhanguo Wang
Keyword(s):  
Quantum Wells ◽  
Spin Polarization ◽  
Coupled Quantum Wells ◽  
Spin Dependent Transport ◽  
Dependent Transport

scholarly journals High-temperature Mott transition in wide-band-gap semiconductor quantum wells

2014 ◽  
Vol 90 (20) ◽  
Author(s):  
G. Rossbach ◽  
J. Levrat ◽  
G. Jacopin ◽  
M. Shahmohammadi ◽  
J.-F. Carlin ◽  
...  
Keyword(s):  
High Temperature ◽  
Quantum Wells ◽  
Band Gap ◽  
Wide Band ◽  
Mott Transition ◽  
Wide Band Gap ◽  
Semiconductor Quantum Wells

Spin-dependent transport of holes in silicon quantum wells confined by superconductor barriers

2008 ◽  
Vol 468 (7-10) ◽  
pp. 840-843 ◽  
Author(s):  
Nikolay T. Bagraev ◽  
Wolfgang Gehlhoff ◽  
Leonid E. Klyachkin ◽  
Andrey A. Kudryavtsev ◽  
Anna M. Malyarenko ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Spin Dependent Transport ◽  
Dependent Transport

scholarly journals Spin-Dependent Transport Of Holes In Silicon Quantum Wells Confined By Superconductor Barriers

2010 ◽  
Author(s):  
N. T. Bagraev ◽  
W. Gehlhoff ◽  
L. E. Klyachkin ◽  
A. A. Kudryavtsev ◽  
A. M. Malyarenko ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Spin Dependent Transport ◽  
Dependent Transport

scholarly journals High-temperature quantum Hall effect in finite gapped HgTe quantum wells

2016 ◽  
Vol 93 (12) ◽  
Author(s):  
T. Khouri ◽  
M. Bendias ◽  
P. Leubner ◽  
C. Brüne ◽  
H. Buhmann ◽  
...  
Keyword(s):  
High Temperature ◽  
Quantum Wells ◽  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall

ELECTRONIC SPINS AND LOCALIZED MAGNETIC MOMENTS IN DILUTE MAGNETIC SEMICONDUCTOR QUANTUM WELLS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3727-3734
Author(s):  
F. J. TERAN ◽  
M. POTEMSKI ◽  
D. K. MAUDE ◽  
A. K. HASSAN ◽  
D. PLANTIER ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Electrical Transport ◽  
Magnetic Moments ◽  
Quantum Hall ◽  
Magnetic Semiconductor ◽  
Direct Consequence ◽  
Zeeman Splitting ◽  
Effective Electron ◽  
Semiconductor Quantum Wells ◽  
Shubnikov De Haas Oscillations

Electrical transport measurements are reported on 2-DEG in a CdMnTe quantum well structure. At low magnetic fields the Shubnikov-de Haas oscillations show a beating pattern with nodes which are a direct consequence of the large Pauli paramagnetism. The effective electron Zeeman splitting ( E Z) has been tuned via the s-d exchange interaction in order to probe the quantum Hall effect under conditions of vanishing Zeeman energy. We have observed that reducing E Z to zero does not necessary imply a closing of the spin gap.

scholarly journals Spin-dependent transport through helical Aharonov-Bohm interferometer

2021 ◽  
Vol 2086 (1) ◽  
pp. 012198
Author(s):  
R A Niyazov ◽  
D N Aristov ◽  
V Yu Kachorovskii
Keyword(s):  
Magnetic Field ◽  
Quantum Computing ◽  
High Temperature ◽  
Magnetic Impurities ◽  
Edge States ◽  
Level Spacing ◽  
Transmission Coefficients ◽  
Spin Dependent Transport ◽  
Dependent Transport ◽  
Aharonov Bohm

Abstract We discuss spin-dependent transport via tunneling Aharonov-Bohm interferometer formed by helical edge states tunnel-coupled to helical leads. We focus on the experimentally relevant high-temperature case as compared to the level spacing and obtain the full 4×4 matrix of transmission coefficients in the presence of magnetic impurities. We show that spin conserving and spin-flip transmission coefficients of the setup can be effectively tuned by the magnetic flux. These features are attractive due to possible applications for spintronics, magnetic field detection, and quantum computing.

Microcavities

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Quantum Wells ◽  
Strong Light ◽  
Fundamental Physics ◽  
Postgraduate Students ◽  
Optical Cavities ◽  
Semiconductor Quantum Wells ◽  
Exciton Polaritons ◽  
Different Types ◽  
Potential Applications ◽  
Experimental Findings

Both rich fundamental physics of microcavities and their intriguing potential applications are addressed in this book, oriented to undergraduate and postgraduate students as well as to physicists and engineers. We describe the essential steps of development of the physics of microcavities in their chronological order. We show how different types of structures combining optical and electronic confinement have come into play and were used to realize first weak and later strong light–matter coupling regimes. We discuss photonic crystals, microspheres, pillars and other types of artificial optical cavities with embedded semiconductor quantum wells, wires and dots. We present the most striking experimental findings of the recent two decades in the optics of semiconductor quantum structures. We address the fundamental physics and applications of superposition light-matter quasiparticles: exciton-polaritons and describe the most essential phenomena of modern Polaritonics: Physics of the Liquid Light. The book is intended as a working manual for advanced or graduate students and new researchers in the field.

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