Anomalous Hall conductivity: local orbitals approach

Details Anomalous Hall conductivity: local orbitals approach Anomalous Hall conductivity: local orbitals approach

2010-04-09

arxiv.org/abs/1004.1504v1

Physics

Condensed Matter

Other Condensed Matter

8 pages, 3 figures

Scientific paper

A theory of the anomalous Hall conductivity based on the properties of single site orbitals is presented. Effect of the finite electron life time is modeled by energy fluctuations of atomic-like orbitals. Transition from the ideal Bloch system for which the conductivity is determined by the Berry phase curvatures to the case of strong disorder for which the conductivity becomes dependent on the relaxation time is analyzed. Presented tight-binding model gives by the unified way experimentally observed qualitative features of the anomalous conductivity in the so called good metal regime and that called as bad metal or hopping regime.

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