Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-07-12
J. Phys. Soc. Jpn. 71, 2742 (2002)
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, 16 figures
Scientific paper
10.1143/JPSJ.71.2742
Taking account of a collective mode relevant to charge fluctuation, the optical conductivity of spin-density-wave state has been examined for an extended Hubbard model with one-dimensional quarter-filled band. We find that, within the random phase approximation, the conductivity exhibits several peaks at the frequency corresponding to the excitation energy of the commensurate collective mode. When charge ordering appears with increasing inter-site repulsive interactions, the main peak with the lowest frequency is reduced and the effective mass of the mode is enhanced indicating the suppression of the effect of the collective mode by charge ordering. It is also shown that the reflectivity becomes large in a wide range of frequency due to the huge dielectric constant induced by the collective mode.
Suzumura Yoshikazu
Tomio Yuh
No associations
LandOfFree
Role of Collective Mode for Optical Conductivity and Reflectivity in Quarter-Filled Spin-Density-Wave State 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 Role of Collective Mode for Optical Conductivity and Reflectivity in Quarter-Filled Spin-Density-Wave State, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Role of Collective Mode for Optical Conductivity and Reflectivity in Quarter-Filled Spin-Density-Wave State will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-710057