Title data
Reiter, Doris ; Axt, Vollrath Martin ; Kuhn, Tilmann:
Spectral characteristics and dynamics of a light hole type quantum dot doped with a single Mn atom.
In: Physica Status Solidi C.
Vol. 9
(2012)
Issue 5
.
- pp. 1284-1287.
ISSN 1610-1642
DOI: https://doi.org/10.1002/pssc.201100185
Abstract in another language
For a single semiconductor quantum dot doped with a single Mn atom we study theoretically the spectral characteristics and dynamics under optical excitation. Because the Mn spin couples to the electron and hole spin of the quantum dot exciton via the exchange interaction, in the absorption spectrum instead of a single exciton line a set of lines appears. Here we consider a quantum dot with one conduction band and one light hole type valence band. Due to this untypical valence band structure a spectrum of twelve lines is seen at zero magnetic field. When a magnetic field is applied, the lines shift, cross and anticross. By an analysis of the corresponding eigenvalues and eigenfunctions as functions of the magnetic field more insight into the spectral behavior can be achieved. The exchange interaction furthermore opens the possibility for ultra fast control of the Mn spin via optical manipulation of the exciton. We analyze whether switching of the Mn spin can be optimized by the application of an external magnetic field.
Further data
Item Type: | Article in a journal |
---|---|
Refereed: | Yes |
Keywords: | quantum dot; magnetic semiconductor; optical control; spectrum; coherent control; light holes |
Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III |
Result of work at the UBT: | Yes |
DDC Subjects: | 500 Science > 530 Physics |
Date Deposited: | 30 Oct 2017 15:08 |
Last Modified: | 09 Mar 2022 08:18 |
URI: | https://eref.uni-bayreuth.de/id/eprint/40235 |