Conductance relaxation in the Electron-Glass; Microwaves versus infra-red response

Abstract

We study the time-dependent conductance of electron-glasses excited by electromagnetic radiation at microwaves (MW) and infra-red frequencies. In either case the conductance G is enhanced during exposure but its time dependence after the radiation is turned off is qualitatively different depending on the frequency. For comparison, results of excitation produced by a gate-voltage and temperature changes are also shown. The glassy nature of the system allows us to demonstrate that the MW-enhanced conductance is not due to heating. These findings are discussed in terms of an energy E_{c} that characterizes the equilibrium charge distribution of the electron-glass.

arXiv comment4 figures

References in corpus (13)

• The glass transition and the Coulomb gap in electron glasses
• Time Dependent Development of the Coulomb Gap
• Stress-aging in the electron-glass
• Mean field theory for the three-dimensional Coulomb glass
• A mean-field model for the electron glass dynamics
• Symmetrical field effect and slow electron relaxation in granular aluminium
• The Memory Effect in Electron Glasses
• Off-equilibrium dynamics of the two-dimensional Coulomb glass
• Electron-Assisted Hopping in Two Dimensions
• The Frequency Dependent Conductivity of Electron Glasses
• Relaxation dynamics in quantum electron-glasses
• Temperature and field dependence of Dynamics in the Electron-Glass
• Slow conductance relaxations; Distinguishing the Electron Glass from extrinsic mechanisms

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