Quantum corrections to the conductivity and Hall coefficient of a 2D   electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: transition from   diffusive to ballistic regime
  We report an experimental study of the quantum corrections to the longitudinal conductivity and the Hall coefficient of a low mobility, high density two-dimensional two-dimensional electron gas in a AlGaAs/GaAs/AlGaAs quantum well in a wide temperature range (1.5 K - 110 K). This temperature range covers both the diffusive and the ballistic interaction regimes for our samples. It was therefore possible to study the crossover region for the longitudinal conductivity and the Hall effect. 
Vincent Thomas Francois Renard (LCMI, INSA TOULOUSE), O. A. Tkachenko   (Institute of semiconductor Physics, LCMI), Ze Don K...