Quantum ripples in strongly correlated metals

Abstract

We study how well-known effects of the long-ranged Friedel oscillations are affected by strong electronic correlations. We first show that their range and amplitude are significantly suppressed in strongly renormalized Fermi liquids. We then investigate the interplay of elastic and inelastic scattering in the presence of these oscillations. In the singular case of two-dimensional systems, we show how the anomalous ballistic scattering rate is confined to a very restricted temperature range even for moderate correlations. In general, our analytical results indicate that a prominent role of Friedel oscillations is relegated to weakly interacting systems.

4+ pages, 2 figures. Revised version.

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• Metal-insulator transition in two-dimensional electron systems
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• Kondo proximity effect: How does a metal penetrate into a Mott insulator?
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