Optical signatures of electron correlations in the cuprates

Details Optical signatures of electron correlations in the cuprates Optical signatures of electron correlations in the cuprates

2003-01-26

arxiv.org/abs/cond-mat/0301506v4

in "Strong Interactions in Low Dimensions, Series: Physics and Chemistry of Materials with Low-Dimensional Structures, Vol. 25

Physics

Condensed Matter

Strongly Correlated Electrons

43 pages, LaTeX, 11 encapsulated postscript figures. To be published in "Interaction Electrons in Low Dimensions", book series

Scientific paper

The f-sum rule is introduced and its applications to electronic and vibrational modes are discussed. A related integral over the intra-band part of sigma(omega) which is also valid for correlated electrons, becomes just the kinetic energy if the only hopping os between nearest-neighbor sites. A summary is given of additional sum-rule expressions for the optical conductivity and the dielectric function, including expressions for the first and second moment of the optical conductivity, and a relation between the Coulomb correlation energy and the energy loss function. It is shown from various examples, that the optical spectra of high Tc materials along the c-axis and in the ab-plane direction can be used to study the kinetic energy change due to the appearance of superconductivity. The results show, that the pairing mechanism is highly unconventional, and mostly associated with a lowering of kinetic energy parallel to the planes when pairs are formed. Keywords: Optical conductivity, spectral weight, sum rules, reflectivity, dielectric function, inelastic scattering, energy loss function, inelastic electron scattering, Josephson plasmon, multi-layers, interlayer tunneling, transverse optical plasmon, specific heat, pair-correlation, kinetic energy, correlation energy, internal energy.

Affiliated with

Also associated with

No associations

Rating

Optical signatures of electron correlations in the cuprates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical signatures of electron correlations in the cuprates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical signatures of electron correlations in the cuprates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-412514