Ultrafast carrier's dynamics with scattering rate saturation in Ge
thinfilms
- Praveen Saxena ,
- Fanish Kumar Gupta ,
- Anshika Srivastava ,
- Pankaj Srivastava ,
- Anshu Saxena
Abstract
An innovative theoretical approach for deeper understanding of the
ultrafast spectroscopy experiments through solution of the Boltzmann
transport equation coupled with various nonlinear scattering mechanisms,
overcoming the limitations offered by DFT, RT-TDDFT and molecular based
methods, is reported. A clear advantage of the real-time approach is
that it does not make a priori assumptions about specific scattering,
relaxation mechanisms and has capabilities to capture the full real-time
carrier's dynamics, including the superposition of all
electron--electron, electron-lattice and electron--phonon scatterings
etc. No such method with advances in theoretical treatments to explain
ultrafast spectroscopy has been reported previously as per the author's
knowledge.