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All-optical spin switching in neutral or charged magnetic quantum dots

Title data

Reiter, Doris ; Hemmert, G. ; Kuhn, Tilmann ; Axt, Vollrath M. ; Machnikowski, Paweł:
All-optical spin switching in neutral or charged magnetic quantum dots.
In: Journal of Physics: Conference Series. Vol. 210 (2010) Issue 1 . - Art.Nr. 012004, 4 S..
ISSN 1742-6596
DOI: https://doi.org/10.1088/1742-6596/210/1/012004

Abstract in another language

The spin dynamics in a single semiconductor quantum dot doped with a single Mn atom are analyzed. We consider a neutral and a negatively charged dot and in both cases we concentrate on the light hole-to-conduction band transition. Both electrons and light holes couple to the Mn spin via the strong exchange interaction. After the excitation by an ultra short laser pulse oscillatory spin dynamics take place, where electron or hole can flip their spin accompanied by a change of the Mn spin. The Mn spin dynamics can be controlled by excitation with additional pulses. Starting from a given initial state we demonstrate that the Mn spin can be flipped all-optically into a steady final state in both neutral or charged quantum dots.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: magnetic quantum dot; ultrafast dynamics; excitons; spintronics; exchange interaction; nonlinear optics; coherent control; optical control; spin control; all optical spin control; Mn doped quantum dot; spin switching
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 12:54
Last Modified: 30 Oct 2017 12:54
URI: https://eref.uni-bayreuth.de/id/eprint/40213