Optical Sum Rule in Finite Bands

Details Optical Sum Rule in Finite Bands Optical Sum Rule in Finite Bands

2006-08-04

arxiv.org/abs/cond-mat/0608116v1

J. Low Temp. Phys. 144, 61 - 120 (2006)

Physics

Condensed Matter

Superconductivity

Review article accepted for publication in J. Low Temp. Phys. 29 pages, 33 figures

Scientific paper

10.1007/s10909-006-9228-2

In a single finite electronic band the total optical spectral weight or optical sum carries information on the interactions involved between the charge carriers as well as on their band structure. It varies with temperature as well as with impurity scattering. The single band optical sum also bears some relationship to the charge carrier kinetic energy and, thus, can potentially provide useful information, particularly on its change as the charge carriers go from normal to superconducting state. Here we review the considerable advances that have recently been made in the context of high $T_c$ oxides, both theoretical and experimental.

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