Low-frequency impurity conduction in lightly doped n-type GaAs
- 5 February 1976
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 9 (3), 491-496
- https://doi.org/10.1088/0022-3719/9/3/016
Abstract
The real part of the AC conductivity has been measured in epitaxial layers of n-type GaAs in the frequency range 1-103 Hz at 4.2K, where the DC conductivity is dominated by phonon-assisted hopping between impurities. These measurements cover the transition region from DC behaviour to an omega S dependence, where s approximately 0.6, and are compared with a recent theory of the frequency-dependent impurity conduction by Scher and Lax (1973) based on a stochastic interpretation of transport in a disordered solid. The theory predicts a DC limit of the conductivity which is about four orders of magnitude lower than the experimental values.Keywords
This publication has 10 references indexed in Scilit:
- Stochastic interpretation of the rate equation formulation of hopping transport theory. III. DC hopping analogues and their application to percolative conductance networks and spin systemsJournal of Physics C: Solid State Physics, 1974
- Stochastic interpretation of the rate equation formulation of hopping transport theory. II. The DC limitJournal of Physics C: Solid State Physics, 1974
- Stochastic interpretation of the rate equation formulation of hopping transport theoryJournal of Physics C: Solid State Physics, 1974
- Exact solution of the AC hopping conductivity problem at low site densitiesJournal of Physics C: Solid State Physics, 1973
- The role of contacts in frequency-dependent conduction in disordered solidsJournal of Physics C: Solid State Physics, 1973
- Stochastic Transport in a Disordered Solid. II. Impurity ConductionPhysical Review B, 1973
- Stochastic Transport in a Disordered Solid. I. TheoryPhysical Review B, 1973
- Frequency-dependence of conductivity in hopping systemsJournal of Non-Crystalline Solids, 1972
- Ionized Impurity Density in n-Type GaAsJournal of Applied Physics, 1970
- Low-Frequency Conductivity Due to Hopping Processes in SiliconPhysical Review B, 1961