Glass Transition in a Two-Dimensional Electron System in Silicon

Abstract

Large fluctuations of conductivity with time are observed in a low-mobility two-dimensional electron system in silicon at low electron densities $n_s$ and temperatures. A dramatic increase of the noise power ($\propto 1/f^{\alpha }$) as $n_s$ is reduced below a certain density $n_g$, and a sharp jump of $\alpha$ at $n_s\approx n_g$, are attributed to the freezing of the electron glass at $n_s=n_g$. The data strongly suggest that glassy dynamics persists in the metallic phase.

arXiv commentEP2DS-14 conference

References in corpus (5)

• Metallic behavior and related phenomena in two dimensions
• Wigner Glass, Spin-liquids, and the Metal-Insulator Transition
• Melting of the Electron Glass
• Magnetoconductance noise and irreversibilities in submicron wires of spin-glass n-CdMnTe
• Universal conductance fluctuations and low temperature 1/f noise in mesoscopic AuFe spin glasses

Cited by in corpus (3)

• Noise at the Wigner Glass Transition
• Exact multi-electronic electron-concentration dependent ground-states for disordered two-dimensional two-band systems in presence of disordered hoppings and finite on-site random interactions
• Glassy Behavior of Electrons as a Precursor to the Localization Transition