Metal-insulator transition in two dimensions: experimental test of the two-parameter scaling.
We report a detailed scaling analysis of resistivity rho(T,n) measured for several high-mobility 2D electron systems in the vicinity of the 2D metal-insulator transition. We analyzed the data using the two-parameter scaling approach and general scaling ideas. This enables us to determine the critical electron density, two critical indices, and temperature dependence for the separatrix in the self-consistent manner. In addition, we reconstruct the empirical scaling function describing a two-parameter surface which fits well the rho(T,n) data.
Knyazev
D A
DA
P.N. Lebedev Physical Institute RAS, 119991 Moscow, Russia.
Omel'yanovskii
O E
OE
Pudalov
V M
VM
Burmistrov
I S
IS