Metal-Insulator Transition in Two Dimensions: Effects of Disorder and Magnetic Field

1997 ◽  
Vol 79 (8) ◽  
pp. 1543-1546 ◽  
Author(s):  
Dragana Popović ◽  
A. B. Fowler ◽  
S. Washburn
Keyword(s):  
Magnetic Field ◽  
Two Dimensions ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Effects Of Disorder

Magnetic-field-induced metal-insulator transition in two dimensions

1994 ◽  
Vol 72 (5) ◽  
pp. 709-712 ◽  
Author(s):  
T. Wang ◽  
K. P. Clark ◽  
G. F. Spencer ◽  
A. M. Mack ◽  
W. P. Kirk
Keyword(s):  
Magnetic Field ◽  
Two Dimensions ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

PERCOLATION APPROACH TO THE METAL–INSULATOR TRANSITION IN TWO DIMENSIONS

2001 ◽  
Vol 15 (19n20) ◽  
pp. 2641-2645
Author(s):  
YIGAL MEIR
Keyword(s):  
Magnetic Field ◽  
Critical Density ◽  
Metallic Phase ◽  
Two Dimensions ◽  
Insulator Transition ◽  
Exponential Dependence ◽  
Metal Insulator Transition ◽  
Electron Model ◽  
Metal Insulator ◽  
Model Combining

A simple non-interacting-electron model, combining local quantum tunneling via quantum point contacts and global classical percolation, is introduced in order to describe the observed "metal–insulator transition" in two dimensions.1 It is shown that many features of the experiments, such as the exponential dependence of the resistance on temperature on the metallic side, the linear dependence of the exponent on density, the e2/h scale of the critical resistance, the quenching of the metallic phase by a parallel magnetic field and the non-monotonic dependence of the critical density on a perpendicular magnetic field, can be naturally explained by the model.

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