Frictional drag in dilute bilayer 2D hole systems

Abstract

We develop a theory for frictional drag between two 2D hole layers in a dilute bilayer GaAs hole system, including effects of hole-hole and hole-phonon interactions. Our calculations suggest significant enhancement of hole drag transresistivity over the corresponding electron drag results. This enhancement originates from the exchange induced renormalization of the single layer compressibility and the strong dependence of single layer conductivity on density. We also address the effect of hole-phonon interaction on the drag temperature dependence. Our calculated results are in reasonable quantitative agreement with recent experimental observations.

Revised version with new co-authors and additional results

References in corpus (4)

• Frictional Drag between Two Dilute Two-Dimensional Hole Layers
• Oscillating sign of drag in high Landau levels
• Mesoscopic fluctuations of the Coulomb drag at $\nu$=1/2
• Correlation induced phonon softening in low density coupled bilayer systems

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