Simple fit to the ground-state energy of the two-dimensional electron gas in the fractional quantum Hall regime

1995 ◽  
Vol 51 (3) ◽  
pp. 1653-1657 ◽  
Author(s):  
M. W. C. Dharma-wardana
Keyword(s):  
Ground State ◽  
State Energy ◽  
Electron Gas ◽  
Quantum Hall ◽  
Dimensional Electron ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Dimensional Electron Gas

Interaction of magnetoexcitons and two-dimensional electron gas in the quantum Hall regime

1990 ◽  
Vol 64 (20) ◽  
pp. 2434-2437 ◽  
Author(s):  
W. Chen ◽  
M. Fritze ◽  
A. V. Nurmikko ◽  
D. Ackley ◽  
C. Colvard ◽  
...  
Keyword(s):  
Electron Gas ◽  
Quantum Hall ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Dimensional Electron Gas

Enhancements in Two Dimensional Electron Gas Density and Mobility in δ-Doped AiGaAs Heterostructures

1987 ◽  
Vol 102 ◽  
Author(s):  
J. E. Cunningham ◽  
G. L Timp ◽  
E. F. Schubert ◽  
W. T. Tsang ◽  
P. G. N. DeVegvar ◽  
...  
Keyword(s):  
Quantum Hall Effect ◽  
Electron Gas ◽  
Quantum Hall ◽  
Fractional Quantum Hall Effect ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Dimensional Electron Gas ◽  
B Doping

ABSTRACTWe report our recent investigations of a new structure formed by b-doping the barrier of an AlGaAs/GaAs heterostructure. In this new structure we have observed both a mobility of 1.9×lO6cm2/Vsec and the fractional quantum hall effect. We compare low temperature mobilities and densities achieved with the δ-doped heterostructure with corresponding high values reported in the literature for the homogeneously- doped heterostructure. We show that systematic enhancements in both density and mobility occur in the b-doped heterostructure. By δ-doping both barriers of a quantum well we have also achieved electron concentrations of 4×1012cm -2 in the well.

Magnetic field dependence of the high-frequency capacitive response of a 2-dimensional electron gas in the quantum hall regime

1996 ◽  
Vol 46 (S5) ◽  
pp. 2459-2460 ◽  
Author(s):  
A. M. C. Valkering ◽  
P. K. H. Sommerfeld ◽  
R. A. M. van de Ven ◽  
R. W. van der Heijden ◽  
F. A. P. Blom
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
High Frequency ◽  
Magnetic Field Dependence ◽  
Electron Gas ◽  
Quantum Hall ◽  
Dimensional Electron ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Dimensional Electron Gas

scholarly journals 3/2 fractional quantum Hall plateau in confined two-dimensional electron gas

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Hailong Fu ◽  
Yijia Wu ◽  
Ruoxi Zhang ◽  
Jian Sun ◽  
Pujia Shan ◽  
...  
Keyword(s):  
Electron Gas ◽  
Quantum Hall ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Fractional Quantum ◽  
Edge Structure ◽  
Fractional Quantum Hall ◽  
Lateral Confinement ◽  
Dimensional Electron Gas

Abstract Even-denominator fractional quantum Hall (FQH) states, such as 5/2 and 7/2, have been well known in a two-dimensional electron gas (2DEG) for decades and are still investigated as candidates of non-Abelian statistics. In this paper, we present the observation of a 3/2 FQH plateau in a single-layer 2DEG with lateral confinement at a bulk filling factor of 5/3. The 3/2 FQH plateau is quantized at $$\left( {\frac{h}{{e^2}}} \right)/\left( {\frac{3}{2}} \right)$$ h e 2 ∕ 3 2 within 0.02%, and can survive up to 300 mK. This even-denominator FQH plateau may imply intriguing edge structure and excitation in FQH system with lateral confinement. The observations in this work demonstrate that understanding the effect of the lateral confinement on the many-body system is critical in the pursuit of important theoretical proposals involving edge physics, such as the demonstration of non-Abelian statistics and the realization of braiding for fault-tolerant quantum computation.

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