Frictional Drag between Two Dilute Two-Dimensional Hole Layers
classification
❄️ cond-mat.mes-hall
cond-mat.str-el
keywords
dilutedragholeinteractionregimetwo-dimensionalboltzmanncalculations
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We report drag measurements on dilute double layer two-dimensional hole systems in the regime of r_s=19~39. We observed a strong enhancement of the drag over the simple Boltzmann calculations of Coulomb interaction, and deviations from the T^2 dependence which cannot be explained by phonon-mediated, plasmon-enhanced, or disorder-related processes. We suggest that this deviation results from interaction effects in the dilute regime.
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