Slow conductance relaxations; Distinguishing the Electron Glass from extrinsic mechanisms

Abstract

Slow conductance relaxations are observable in a many condensed matter systems. These are sometimes described as manifestations of a glassy phase. The underlying mechanisms responsible for the slow dynamics are often due to structural changes which modify the potential landscape experienced by the charge-carriers and thus are reflected in the conductance. Sluggish conductance dynamics may however originate from the interplay between electron-electron interactions and quenched disorder. Examples for both scenarios and the experimental features that should help to distinguish between them are shown and discussed. In particular, it is suggested that the `memory-dip' observable through field-effect measurements is a characteristic signature of the inherent electron-glass provided it obeys certain conditions.

10 pages 8 figures

References in corpus (6)

• Symmetrical field effect and slow electron relaxation in granular aluminium
• Heterogeneous dynamics of the three dimensional Coulomb glass out of equilibrium
• Relaxation dynamics in quantum electron-glasses
• Temperature and field dependence of Dynamics in the Electron-Glass
• The Electron-Glass in samples approaching the Mesoscopic regime
• Coexistence of anomalous field effect and mesoscopic conductance fluctuations in granular aluminium

Cited by in corpus (13)

• High-Temperature Performance of MoS2 Thin-Film Transistors: DC and Pulse Current-Voltage Characteristics
• Slow Dynamics of the Electron-Glasses; the Role of Disorder
• Conductance relaxation in the Electron-Glass; Microwaves versus infra-red response
• Intrinsic electron-glassiness in strongly-localized Be films
• Slow Conductance Relaxation in Insulating Granular Al: Evidence for Screening Effects
• Electron Glass in a three-dimensional system
• Coexistence of Electron-Glass Phase and Persistent Photoconductivity in GeSbTe Compounds
• Logarithmic relaxation and stress aging in the electron glass
• Optical excitation of Electron-Glasses
• Nonequilibrium transport and Electron-Glass effects in thin GexTe films
• Evidence for thermal activation in the glassy dynamics of insulating granular aluminum conductance
• Interaction induced spatial correlations in a Disordered Glass
• Electron glass signatures up to room temperature in disordered insulators