By employing the time-dependent Lanczos method, the nonequilibrium process of the half-filled one-dimensional extended Hubbard model under the irradiation of a transient laser pulse is investigated. We show that in the spin-density-wave (SDW) phase, the antiferromagnetic spin correlations are impaired by the photoinduced charge carriers. Near the phase boundary between the SDW and charge-density-wave (CDW) phases, a local enhancement of charge (spin) order that is absent in the original SDW (CDW) phase can be realized with proper laser frequency and strength. The possibility of restoration of spin orders from the CDW phase by optical means is discussed.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2013|
|Event||24th IUPAP Conference on Computational Physics, IUPAP-CCP 2012 - Kobe, Japan|
Duration: 2012 Oct 14 → 2012 Oct 18
ASJC Scopus subject areas
- Physics and Astronomy(all)