Critical behavior of transport and magnetotransport in 2D electron system in Si in the vicinity of the metal-insulator transition
D. A. Knyazev, O. E. Omel'yanovskii, V. M. Pudalov, I. S. Burmistrov+*
P.N. Lebedev Physical Institute RAS, 119991 Moscow, Russia
+L.D. Landau Institute for Theoretical Physics RAS, 117940 Moscow, Russia
*Moscow Institute of Physics and Technology, Department of theoretical physics, 141700 Moscow, Russia
PACS: 73.40.Qv, 73.43.Nq
Abstract
We report on studies of the magnetoresistance in strongly
correlated 2D electron system in Si in the critical regime, in the close
vicinity of the 2D metal-insulator transition. We performed self-consistent
comparison of our data with solutions of two equations of the cross-over
renormalization group (CRG) theory, which describes temperature evolutions of
the resistivity and interaction parameters for 2D electron system. We found a
good agreement between the data and the RG theory in a
wide range of the in-plane fields, 0-2.1 T. This agreement supports the
interpretation of the observed 2D MIT as the true quantum phase transition.