Classical versus Quantum Effects in the B=0 Conducting Phase in Two Dimensions

Abstract

In the dilute two-dimensional electron system in silicon, we show that the temperature below which Shubnikov-de Haas oscillations become apparent is approximately the same as the temperature below which an exponential decrease in resistance is seen in B=0, suggesting that the anomalous behavior in zero field is observed only when the system is in a degenerate (quantum) state. The temperature dependence of the resistance is found to be qualitatively similar in B=0 and at integer Landau level filling factors.

3 pages, 3 figures

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Cited by in corpus (5)

• Metallic behavior and related phenomena in two dimensions
• Metal-insulator transition in 2D: resistance in the critical region
• Magnetic-Field-Driven Superconductor-Insulator-Type Transition in Graphite
• Degenerate versus semi-degenerate transport in a correlated 2D hole system
• Impact of Short-Range Scattering on the Metallic Transport of Strongly Correlated 2D Holes in GaAs Quantum Wells