Deconstruction of the Trap Model for the New Conducting State in 2D

Abstract

A key prediction of the trap model for the new conducting state in 2D is that the resistivity turns upwards below some characteristic temperature, $T_{\min }$. Altshuler, Maslov, and Pudalov have argued that the reason why no upturn has been observed for the low density conducting samples is that the temperature was not low enough in the experiments. We show here that $T_{\min }$ within the Altshuler, Maslov, and Pudalov trap model actually increases with decreasing density, contrary to their claim. Consequently, the trap model is not consistent with the experimental trends.

Published version of Deconstruction

References in corpus (4)

• Metallic behavior and related phenomena in two dimensions
• Metallic low-temperature resistivity in 2D over an extended temperature range
• Metal-insulator transition in 2D: Anderson localization by temperature-dependent disorder?
• Weak Field Hall Resistance and Effective Carrier Density Through Metal-Insulator Transition in Si-MOS Structures