Nonlocal adiabatic response of Disordered-Insulators

Charge transport in Anderson insulators is governed by disorder and Coulomb interactions and their competition leads to glassy behavior. This has been experimentally observed in heavily-doped semiconductors where the disorder necessary to render them Anderson-insulators is large enough to reduce electronic relaxation rates many decades below inter-sites transition-times associated with their conductivity. In this talk, use will be made of this characteristic feature to demonstrate another inherent feature of disordered insulators; a time-dependent local perturbation may induce a nonlocal response over scales that may extend much further than the localization length.