Electrical conductivity of a low-temperature two-dimensional medium
Abstract
A study of the conductivity in the two-dimensional system formed near the (111) face of a germanium single crystal over the temperature interval from 1.2 to 4.2 K is presented. The method of preparation of the crystals is described, and the characteristics of the product are discussed. The temperature dependence of the surface electrical conductivity is shown. At conductivity less than about e-squared/h, the conductivity varies in proportion to exp(-epsilon/kT), where e is the electron charge, h is the Planck constant, and epsilon is the activation energy. The temperature dependence of the conductivity at values greater than e-squared/h is attributed to a 'weak' localization and an interaction of electrons. It is concluded that the conductivity decreases with decreasing temperature in proportion to lnT.
- Publication:
-
ZhETF Pisma Redaktsiiu
- Pub Date:
- January 1983
- Bibcode:
- 1983ZhPmR..37...87V
- Keywords:
-
- Electrical Resistivity;
- Germanium;
- Low Temperature Physics;
- Metal Crystals;
- Surface Properties;
- Two Dimensional Bodies;
- Activation Energy;
- Mis (Semiconductors);
- Plancks Constant;
- Solid-State Physics