Scaling and universality of integer quantum Hall plateau-to-plateau transitions.
We have investigated the integer quantum Hall plateau-to-plateau transition in two-dimensional electrons confined to AlxGa(1-x)As-Al0.33Ga0.67As heterostructures over a broad range of Al concentration x. For x between 0.65% and 1.6%, where the dominant contribution to disorder is from the short-range alloy potential fluctuations, we observe a perfect power-law scaling in the temperature range from 30 mK to 1 K with a critical exponent kappa = 0.42 +/- 0.01.
Li
Wanli
W
Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
Csáthy
G A
GA
Tsui
D C
DC
Pfeiffer
L N
LN
West
K W
KW