Ab initio description of correlated few-particle excitations

Basic data for this project

Type of projectIndividual project
Duration at the University of Münster01/10/2019 - 30/09/2022 | 1st Funding period

Description

The macroscopic electronic and optical properties of nanostructured materials are determined by their quantum mechanical properties. Correlated excitations dominate the optical properties of bulk systems, quantum dots, quantum wells, and in particular of two-dimensional materials which are in the focus of current research. In these materials quasi particles like excitons or trions (i.e. excitations consisting of two or three correlated electrons and holes) offer fascinating physical properties. The reliable and predictive description of excitons and trions from first principles by the state-of-the-art GW/BSE method is feasible, but until now only in the case of vanishing doping and negligible interactions with phonons. In this project, we plan to extend these approaches to be able to describe higher doping concentrations. Adding the electron-phonon interaction allows for the calculation of the energetic positions and optical signatures of momentum-indirect transitions. Furthermore, we will apply ab initio methods to investigate the properties of novel systems like excitonic insulators.

KeywordsFestkörperphysik; Mehrteilchen-Anregungen
DFG-Gepris-IDhttps://gepris.dfg.de/gepris/projekt/426726249
Funding identifierDE 2749/2-1 | DFG project number: 426726249
Funder / funding scheme
  • DFG - Individual Grants Programme

Project management at the University of Münster

Deilmann, Thorsten
Institute of Solid State Theory

Applicants from the University of Münster

Deilmann, Thorsten
Institute of Solid State Theory