The magnetoconductivity in metallic n-InSb and n-GaAs has been measured and analyzed with the microscopic theories. In accordance with the theoretical prediction, we have observed various kinks in the T 1 2 (T: temperature) and H 1 2 (H: magnetic fields) dependences of magnetoconductivity which are due to the change of strengths of the localization and Coulomb interaction effects. From these kinks, the values of physical parameters of the Anderson localization have been determined in n-InSb and n-GaAs. The experimental values of parameters are in good agreement with the theoretical prediction. In the regime where the usual microscopic theories on the Anderson localization cannot be applied, many interesting phenomena have been observed in magnetoconductivity.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry