An ab-initio approach to describe coherent and non-coherent exciton dynamics

Davide Sangalli (), Enrico Perfetto, Gianluca Stefanucci and Andrea Marini
Additional contact information
Davide Sangalli: European Theoretical Spectroscopy Facility (ETSF) and CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit)
Enrico Perfetto: European Theoretical Spectroscopy Facility (ETSF) and CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit)
Gianluca Stefanucci: Dipartimento di Fisica and European Theoretical Spectroscopy Facility (ETSF), Università di Roma Tor Vergata
Andrea Marini: European Theoretical Spectroscopy Facility (ETSF) and CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit)

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 8, 1-12

Abstract: Abstract The use of ultra-short laser pulses to pump and probe materials activates a wealth of processes which involve the coherent and non coherent dynamics of interacting electrons out of equilibrium. Non equilibrium (NEQ) many body perturbation theory (MBPT) offers an equation of motion for the density–matrix of the system which well describes both coherent and non coherent processes. In the non correlated case there is a clear relation between these two regimes and the matrix elements of the density–matrix. The same is not true for the correlated case, where the potential binding of electrons and holes in excitonic states need to be considered. In the present work we discuss how NEQ-MBPT can be used to describe the dynamics of both coherent and non-coherent excitons in the low density regime. The approach presented is well suited for an ab initio implementation.

Date: 2018
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1140/epjb/e2018-90126-5 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:91:y:2018:i:8:d:10.1140_epjb_e2018-90126-5

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2018-90126-5

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().