Temperature dependence of the conductivity and minimum quantum mobility of a highly disordered dilute two-dimensional electron gas
We report the first experimental observations of magnetic-field-independent corrections to the conductivity of a weakly interacting 2D electron gas on solid on H2. These incoherent corrections, which are substantially larger than the weak-localization terms at high helium-gas densities, are estimated via an electron-trapping model. The model has essentially no adjustable parameters and gives a self-consistent extrapolation between the weak- and strong-disorder limits. In the regime in which trapping is dominant we observe a residual electron mobility res T-1 associated with a lower quantum limit of diffusion. © 1990 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Adams, P. (1990). Temperature dependence of the conductivity and minimum quantum mobility of a highly disordered dilute two-dimensional electron gas. Physical Review Letters, 65 (26), 3333-3336. https://doi.org/10.1103/PhysRevLett.65.3333