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

S. V. Kravchenko·D. Simonian·K. Mertes·M. P. Sarachik·T. M. Klapwijk
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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.

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S. V. Kravchenko, D. Simonian, K. Mertes, M. P. Sarachik, T. M. Klapwijk. 1998-12-23. Classical versus Quantum Effects in the B=0 Conducting Phase in Two Dimensions. https://doi.org/10.1103/physrevb.59.r12740

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