Photoinduced coherent oscillations in the one-dimensional two-orbital Hubbard model
Strongly Correlated Electrons
2010-11-29 v1
Abstract
We study photoinduced ultrafast coherent oscillations originating from orbital degrees of freedom in the one-dimensional two-orbital Hubbard model. By solving the time-dependent Schr\"odinger equation for the numerically exact many-electron wave function, we obtain time-dependent optical response functions. The calculated spectra show characteristic coherent oscillations that vary with the frequency of probe light. A simple analysis for the dominant oscillating components clarifies that these photoinduced oscillations are caused by the quantum interference between photogenerated states. The oscillation attributed to the Raman-active orbital excitations (orbitons) clearly appears around the charge-transfer peak.
Keywords
Cite
@article{arxiv.1011.5701,
title = {Photoinduced coherent oscillations in the one-dimensional two-orbital Hubbard model},
author = {Nobuya Maeshima and Ken-ichi Hino and Kenji Yonemitsu},
journal= {arXiv preprint arXiv:1011.5701},
year = {2010}
}
Comments
5 pages, 5 figures