Effective detection of spatio-temporal carrier dynamics by carrier capture
Artikel i vetenskaplig tidskrift, 2019

The spatio-temporal dynamics of electrons moving in a 2D plane is challenging to detect when the required resolution shrinks simultaneously to nanometer length and subpicosecond time scale. We propose a detection scheme relying on phonon-induced carrier capture from 2D unbound states into the bound states of an embedded quantum dot. This capture process happens locally and here we explore if this locality is sufficient to use the carrier capture process as detection of the ultrafast diffraction of electrons from an obstacle in the 2D plane. As an example we consider an electronic wave packet traveling in a semiconducting monolayer of the transition metal dichalcogenide MoSe2, and we study the scattering-induced dynamics using a single particle Lindblad approach. Our results offer a new way to high resolution detection of the spatio-temporal carrier dynamics.

Lindblad description

high-resolution detection

spatio-temporal dynamics

phonon-mediated carrier capture

Författare

Roberto Rosati

Universität Münster

Chalmers, Fysik, Kondenserade materiens teori

F. Lengers

Universität Münster

Doris E. Reiter

Universität Münster

T. Kuhn

Universität Münster

Journal of Physics Condensed Matter

0953-8984 (ISSN)

Vol. 31 28 28LT01

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1088/1361-648X/ab17a8

PubMed

30965286

Mer information

Senast uppdaterat

2019-08-16