scholarly journals Networks of quantum wire junctions: A system with quantized integer Hall resistance without vanishing longitudinal resistivity

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Jaime Medina ◽  
Dmitry Green ◽  
Claudio Chamon
Keyword(s):  
Quantum Wire ◽  
Hall Resistance ◽  
Longitudinal Resistivity

scholarly journals THE INTERRELATION BETWEEN INCOMPRESSIBLE STRIPS AND QUANTIZED HALL PLATEAUS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3541-3544 ◽  
Author(s):  
AFIF SIDDIKI ◽  
ROLF R. GERHARDTS
Keyword(s):  
Electron Gas ◽  
Hall Resistance ◽  
Dimensional Electron ◽  
Linear Response Regime ◽  
Self Consistent ◽  
Nice Agreement ◽  
Local Conductivity ◽  
Dimensional Electron Gas ◽  
The Magnetic Field ◽  
Longitudinal Resistivity

We study the current and charge distribution of a two dimensional electron gas under strong perpendicular magnetic fields within the linear response regime. We show within a self-consistent screening theory that incompressible strips with integer values of local Landau-level filling factor exist for finite intervals of the magnetic field strength B. Within an essentially local conductivity model, we find that the current density in these B intervals is confined to the incompressible strips of vanishing local longitudinal resistivity. This leads to vanishing longitudinal and exactly quantized Hall resistance, and to a nice agreement of the calculated Hall potential profiles with the measured ones.

Strain measurement in In0.2Ga0.8As/GaAs quantum wires by convergent beam electron diffraction

1995 ◽  
Vol 53 ◽  
pp. 444-445
Author(s):  
S. Hillyard ◽  
Y.-P. Chen ◽  
J.D. Reed ◽  
W.J. Schaff ◽  
L.F. Eastman ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Semiconductor Lasers ◽  
Quantum Wire ◽  
Quantum Wires ◽  
Convergent Beam Electron Diffraction ◽  
Zero Order ◽  
Beam Electron ◽  
Local Lattice ◽  
Device Applications ◽  
Convergent Beam

The positions of high-order Laue zone (HOLZ) lines in the zero order disc of convergent beam electron diffraction (CBED) patterns are extremely sensitive to local lattice parameters. With proper care, these can be measured to a level of one part in 104 in nanometer sized areas. Recent upgrades to the Cornell UHV STEM have made energy filtered CBED possible with a slow scan CCD, and this technique has been applied to the measurement of strain in In0.2Ga0.8 As wires.Semiconductor quantum wire structures have attracted much interest for potential device applications. For example, semiconductor lasers with quantum wires should exhibit an improvement in performance over quantum well counterparts. Strained quantum wires are expected to have even better performance. However, not much is known about the true behavior of strain in actual structures, a parameter critical to their performance.

Coherent Control of Semiconductor Quantum Wire by High-Resolution and Stable Michelson Interferometer

2008 ◽  
Vol 128 (6) ◽  
pp. 285-291
Author(s):  
Takumi Okada ◽  
Kazuhiro Komori ◽  
Xue-Lun Wang ◽  
Mutsuo Ogura ◽  
Noriaki Tsurumachi
Keyword(s):  
High Resolution ◽  
Quantum Wire ◽  
Coherent Control ◽  
Michelson Interferometer

scholarly journals Strong and robust polarization anisotropy of site- and size-controlled single InGaN/GaN quantum wires

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hwan-Seop Yeo ◽  
Kwanjae Lee ◽  
Young Chul Sim ◽  
Seoung-Hwan Park ◽  
Yong-Hoon Cho
Keyword(s):  
Quantum Wire ◽  
Quantum Wires ◽  
Geometrical Shape ◽  
Optical Polarization ◽  
Polarization Anisotropy ◽  
Single Quantum ◽  
Group Iii ◽  
Highly Efficient ◽  
Group Iii Nitride ◽  
Size Controlled

Abstract Optical polarization is an indispensable component in photonic applications, the orthogonality of which extends the degree of freedom of information, and strongly polarized and highly efficient small-size emitters are essential for compact polarization-based devices. We propose a group III-nitride quantum wire for a highly-efficient, strongly-polarized emitter, the polarization anisotropy of which stems solely from its one-dimensionality. We fabricated a site-selective and size-controlled single quantum wire using the geometrical shape of a three-dimensional structure under a self-limited growth mechanism. We present a strong and robust optical polarization anisotropy at room temperature emerging from a group III-nitride single quantum wire. Based on polarization-resolved spectroscopy and strain-included 6-band k·p calculations, the strong anisotropy is mainly attributed to the anisotropic strain distribution caused by the one-dimensionality, and its robustness to temperature is associated with an asymmetric quantum confinement effect.

3D-Simulation of Novel Quantum Wire Transistors

1997 ◽  
Vol 204 (1) ◽  
pp. 346-349 ◽  
Author(s):  
C. Pigorsch ◽  
W. Wegscheider ◽  
W. Klix ◽  
R. Stenzel
Keyword(s):  
Quantum Wire ◽  
3D Simulation

Aharonov-Bohm-effect induced transparency and reflection in mesoscopic rings side coupled to a quantum wire

2020 ◽  
Vol 116 ◽  
pp. 113770 ◽  
Author(s):  
T. Mrabti ◽  
Z. Labdouti ◽  
A. Mouadili ◽  
E.H. El Boudouti ◽  
B. Djafari-Rouhani
Keyword(s):  
Quantum Wire ◽  
Bohm Effect ◽  
Induced Transparency ◽  
Aharonov Bohm

Are anomalous values of the quantized Hall resistance really anomalous?

Metrologia ◽  
1996 ◽  
Vol 33 (5) ◽  
pp. 499-502 ◽  
Author(s):  
B Jeckelmann ◽  
A D Inglis ◽  
B Jeanneret
Keyword(s):  
Hall Resistance

scholarly journals Proposal for fast optical control of spin dynamics in a quantum wire

2010 ◽  
Vol 82 (23) ◽  
Author(s):  
Z.-G. Zhu ◽  
C.-L. Jia ◽  
J. Berakdar
Keyword(s):  
Quantum Wire ◽  
Spin Dynamics ◽  
Optical Control

Nondissipative current in a quantum wire

2005 ◽  
Vol 31 (6) ◽  
pp. 538-540
Author(s):  
N. M. Guseinov ◽  
S. M. Seyid-Rzayeva
Keyword(s):  
Quantum Wire
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