Figure 4
From: High-mobility capacitively-induced two-dimensional electrons in a lateral superlattice potential
(a) 
for n = 1.6 × 1011 cm−2 at low magnetic fields. (b) Amplitude of the Fourier spectra in logarithmic scale, obtained by Fourier transforming the data between B = −0.5 T and = 0.5 T for every 
. The black dashed lines are empirical fits of the form 
. (c) Assuming the model potential is in the form of 
, we optimize 
and 
to obtain the best fitting between the deduced area 
of the electron orbit encircling one antidot versus 
, and the area 
of a constant energy contour surrounding a single antidot at the Fermi energy. The obtained optimal 
and 
are 1.6 meV and 0.26. (d) The resulting model potential.
