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.

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References in corpus (5)

• Mean field theory for the three-dimensional Coulomb glass
• Symmetrical field effect and slow electron relaxation in granular aluminium
• 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

Cited by in corpus (5)

• High-Temperature Performance of MoS2 Thin-Film Transistors: DC and Pulse Current-Voltage Characteristics
• Suppression of inelastic electron-electron scattering in Anderson Insulators
• Slow Conductance Relaxation in Insulating Granular Al: Evidence for Screening Effects
• Optical excitation of Electron-Glasses
• The effect of screening on the relaxation dynamics in the Coulomb glass