Mechanism for enhanced disordered screening in strongly correlated metals: local vs. nonlocal effects

Details Mechanism for enhanced disordered screening in strongly correlated metals: local vs. nonlocal effects Mechanism for enhanced disordered screening in strongly correlated metals: local vs. nonlocal effects

2011-09-16

arxiv.org/abs/1109.3730v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure; contribution to the Stripes 2011 conference proceedings

Scientific paper

We study the low temperature transport characteristics of a disordered metal in the presence of electron-electron interactions. We compare Hartree-Fock and dynamical mean field theory (DMFT) calculations to investigate the scattering processes of quasiparticles off the screened disorder potential and show that both the local and non-local (coming from long-ranged Friedel oscillations) contributions to the renormalized disorder potential are suppressed in strongly renormalized Fermi liquids. Our results provide one more example of the power of DMFT to include higher order terms left out by weak-coupling theories.

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