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

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

1998-12-23

arxiv.org/abs/cond-mat/9812389v1

Phys. Rev. B 59, R12740 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 3 figures

Scientific paper

10.1103/PhysRevB.59.R12740

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.

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