Universality of vertex corrections to the electrical conductivity in models with elastically scattered electrons

Details Universality of vertex corrections to the electrical conductivity in models with elastically scattered electrons Universality of vertex corrections to the electrical conductivity in models with elastically scattered electrons

2010-01-15

arxiv.org/abs/1001.2700v1

Phys. Rev. B 81, 165103 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

ReVTEX, 9 pages, 8 EPS figures

Scientific paper

10.1103/PhysRevB.81.165103

We study quantum coherence of elastically scattered lattice fermions. We calculate vertex corrections to the electrical conductivity of electrons scattered either on thermally equilibrated or statically distributed random impurities. We demonstrate that the sign of the vertex corrections to the Drude conductivity is in both cases negative. Quantum coherence due to elastic back-scatterings always leads to diminution of diffusion.

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