Nonlocal correlations in the optical conductivity spectra

• Published in: Condensed Matter Physics
• Date: 2018
• Main Authors: Dobushovskyi, D.A., Shvaika, A.M.
• Format: Article
• Language: English
• Published: Інститут фізики конденсованих систем НАН України 2018
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/157057
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Nonlocal correlations in the optical conductivity spectra / D.A. Dobushovskyi, A.M. Shvaika // Condensed Matter Physics. — 2018. — Т. 21, № 2. — С. 23702: 1–16. — Бібліогр.: 40 назв. — англ.

Optical conductivity spectra are studied for the Falicov-Kimball model with correlated hopping on the Bethe lattice. An expression for the current-current correlation function is derived using dynamical mean field theory. In the metallic phase with small correlated hopping values, the shape of Dru...