High‐quality two‐dimensional electron system confined in an AlAs quantum well

1993 ◽  
Vol 62 (24) ◽  
pp. 3120-3122 ◽  
Author(s):  
T. S. Lay ◽  
J. J. Heremans ◽  
Y. W. Suen ◽  
M. B. Santos ◽  
K. Hirakawa ◽  
...  
Keyword(s):  
Quantum Well ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
High Quality ◽  
Dimensional Electron System

Spin susceptibility of two-dimensional electron system in HgTe surface quantum well

2014 ◽  
Vol 105 (6) ◽  
pp. 062404
Author(s):  
Yonggang Xu ◽  
Meng Lv ◽  
Reng Wang ◽  
Yuanming Zhou ◽  
Tie Lin ◽  
...  
Keyword(s):  
Quantum Well ◽  
Electron System ◽  
Spin Susceptibility ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System

Photoluminescence of Two-Dimensional Electron System in Modulation-Doped GaAs Quantum Well

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3897-3900
Author(s):  
H. Nakata ◽  
K. Fujii ◽  
M. Saitoh ◽  
T. Ohyama
Keyword(s):  
Quantum Well ◽  
Electron System ◽  
High Energy ◽  
Momentum Conservation ◽  
Nonlinear Dependence ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Peak Energy ◽  
High Energy Tail ◽  
Dimensional Electron System

We have carried out the photoluminescence measurements of two-dimensional electron system (2DES) in modulation-doped GaAs quantum well. It was found that the H band caused by radiative recombination between 2DES and holes shows a high energy tail below 4.2 K. We explain that the tail originates in the apparent breaking of the momentum conservation law, and that its reason is the electron scattering by neutral donors with the Bohr radius of ~10 nm. The distance between the adjacent donors, 80nm, is obtained from the coupling of the Landau levels in the different 2DES's. Excitonic effect is suggested by nonlinear dependence of the peak energy of the H band on magnetic fields and the lineshape analysis of the H band.

scholarly journals AC MAGNETOTRANSPORT IN REENTRANT INSULATING PHASES OF TWO-DIMENSIONAL ELECTRONS NEAR 1/5 AND 1/3 LANDAU FILLINGS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3553-3556
Author(s):  
YONG P. CHEN ◽  
Z. H. WANG ◽  
R. M. LEWIS ◽  
P. D. YE ◽  
L. W. ENGEL ◽  
...  
Keyword(s):  
High Frequency ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
High Quality ◽  
Data Support ◽  
Resonant Behavior ◽  
Dimensional Electron System ◽  
Insulating Phase

We have measured high frequency magnetotransport of a high quality two-dimensional electron system (2DES) near the reentrant insulating phase (RIP) at Landau fillings (ν) between 1/5 and 2/9. The magnetoconductivity in the RIP has resonant behavior around 150 MHz, showing a peak at ν~0.21. Our data support the interpretation of the RIP as due to some pinned electron solid. We have also investigated a narrowly confined 2DES recently found to have a RIP at 1/3<ν<1/2 and we have revealed features, not seen in DC transport, that suggest some intriguing interplay between the 1/3 FQHE and RIP.

scholarly journals Multivalley two-dimensional electron system in an AlAs quantum well with mobility exceeding 2×106cm2V−1s−1

2018 ◽  
Vol 2 (7) ◽  
Author(s):  
Yoon Jang Chung ◽  
K. A. Villegas Rosales ◽  
H. Deng ◽  
K. W. Baldwin ◽  
K. W. West ◽  
...  
Keyword(s):  
Quantum Well ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System
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