Random magnetic field and weak localization effects in a dimpled 2D electron gas

1995 ◽  
Vol 18 (1) ◽  
pp. 67-73 ◽  
Author(s):  
G.M. Gusev ◽  
U. Gennser ◽  
X. Kleber ◽  
D.K. Maude ◽  
J.C. Portal ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Gas ◽  
Weak Localization ◽  
2D Electron Gas ◽  
Random Magnetic Field

scholarly journals Antilocalization in a 2D Electron Gas in a Random Magnetic Field

2000 ◽  
Vol 85 (5) ◽  
pp. 1060-1063 ◽  
Author(s):  
D. Taras-Semchuk ◽  
K. B. Efetov
Keyword(s):  
Magnetic Field ◽  
Electron Gas ◽  
2D Electron Gas ◽  
Random Magnetic Field

scholarly journals TRANSPORT PROPERTIES OF 2D ELECTRON GAS IN AN n-InGaAs/GaAs DQW IN A VICINITY OF LOW MAGNETIC-FIELD-INDUCED HALL INSULATOR–QUANTUM HALL LIQUID TRANSITION

2007 ◽  
Vol 06 (03n04) ◽  
pp. 173-177
Author(s):  
YU. G. ARAPOV ◽  
S. V. GUDINA ◽  
G. I. HARUS ◽  
V. N. NEVEROV ◽  
N. G. SHELUSHININA ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Gas ◽  
Quantum Hall ◽  
Zero Magnetic Field ◽  
Double Quantum ◽  
Ballistic Regime ◽  
2D Electron Gas ◽  
Double Quantum Well ◽  
Liquid Transition ◽  
Low Magnetic Field

The resistivity (ρ) of low mobility dilute 2D electron gas in an n- InGaAs / GaAs double quantum well (DQW) exhibits the monotonic "insulating-like" temperature dependence (dρ/dT < 0) at T = 1.8–70 K in zero magnetic field. This temperature interval corresponds to a ballistic regime (kBTτ/ħ > 0.1–3.5) for our samples, and the electron density is on an "insulating" side of the so-called B = 0 2D metal–insulator transition. We show that the observed features of localization and Landau quantization in a vicinity of the low magnetic-field-induced insulator–quantum Hall liquid transition is due to the σxy(T) anomalous T-dependence.

Weak localization of 2D electron gas in GaAsGa1−xAlxAs heterostructures under hydrostatic pressure

1990 ◽  
Vol 228 (1-3) ◽  
pp. 449-452 ◽  
Author(s):  
K. Zekentes ◽  
S. Ravanomanjaato ◽  
R. Piotrzkowski ◽  
E. Litwin-Staszewska ◽  
J.L. Robert ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Electron Gas ◽  
Weak Localization ◽  
2D Electron Gas
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