We report investigations of the temperature dependence of the quantized Hall effect in modulation-doped InxGa1-xAs-InP heterojunctions. The diagonal conductivity xx is studied at several maxima and minima of the magnetoresistance xx down to 50 mK. An interesting result is the observation of a hopping conduction mechanism when the Fermi level is in the tail of the broadened Landau levels.
ASJC Scopus subject areas
- Condensed Matter Physics