# Charge dynamics and optical conductivity of the t-J model

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

[ 0.00 ] – not rated yet Voters 0   Comments 0

## Details Charge dynamics and optical conductivity of the t-J model Charge dynamics and optical conductivity of the t-J model

A more detailed discussion on the doping dependence of the results is added. Aspects of the decoupling procedure is clarified

Scientific paper

10.1103/PhysRevB.60.5266

The dynamic charge susceptibility and the optical conductivity are calculated in the planar t-J model within the memory function method, working directly in terms of Hubbard operators. The density fluctuation spectrum consists of a damped sound-like mode for small wave vectors and a broad high energy peak ($\sim t$) for large momenta. The study of the optical conductivity shows that electron scattering from spin fluctuations leads to the Drude-frequency dependent relaxation rate which exhibits a crossover from $\omega^{3/2}$ behavior at low frequencies ($\omega <2|\mu|$), to a linear $\omega$-dependence for frequencies larger than $2|\mu|$. Due to the spin-polaron nature of charge carriers, extra absorbtions arise starting at a frequency $\omega \agt J$. The obtained results are in a good agreement with exact diagonalization studies.

No associations

LandOfFree

## Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

## Rating

Charge dynamics and optical conductivity of the t-J model 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 Charge dynamics and optical conductivity of the t-J model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge dynamics and optical conductivity of the t-J model will most certainly appreciate the feedback.

Profile ID: LFWR-SCP-O-511540

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.