Publications
Non-Adiabatic Quantum Molecular Dynamics (NA-QMD):
Further publications (FIS)
Electron Transport in Laser Fields
Art der Abschlussarbeit
Diplomarbeit
Autoren
- Fischer, Mario
Betreuer
- Prof. Dr. rer. nat. habil. Rüdiger Schmidt
Weitere Betreuer
PD Dr. rer. nat. habil. Frank Großmann
Abstract
One-dimensional systems with a localized, oscillating potential frequently serve as model systems for quantum dots or molecular wires in laser fields. The goal of considering these systems is the determination of the current in dependence of the laser parameters and the applied voltage. Basically the current is a function of the transmission coefficient of the oscillating barrier. Due to the time-dependence of the system, energy is not conserved and the simple definition of the transmission coefficient as on-shell element of the scattering operator is no longer possible. The consideration of one-dimensional, time-independent scattering problems will be extended to periodic time-dependencies in this work. This will be done by means of time-dependent pertubation theory. Especially general transmission coefficients will be defined. These will be calculated analytically as well as numerically for some examples.
For the numerical calculation of the transmission coefficients the newly developed PropCal method will be used. The derivation of this method will be part of this work.
For the numerical calculation of the transmission coefficients the newly developed PropCal method will be used. The derivation of this method will be part of this work.
Zugeordnete Forschungsschwerpunkte
- Leitfähigkeit von Molekülen und Clustern
Zugeordnete Forschungsprojekte
- Periodisch getriebener Stromtransport
Berichtsjahr
2004