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Relaxation and coherent oscillations in the spin dynamics of II-VI diluted magnetic quantum wells

Title data

Ungar, Florian ; Cygorek, Moritz ; Tamborenea, P. I. ; Axt, Vollrath M.:
Relaxation and coherent oscillations in the spin dynamics of II-VI diluted magnetic quantum wells.
In: Journal of Physics: Conference Series. Vol. 647 (2015) Issue 1 . - Art.Nr. 012010, 4 S..
ISSN 1742-6596
DOI: https://doi.org/10.1088/1742-6596/647/1/012010

Project information

Project financing: Deutsche Forschungsgemeinschaft
Supported by the Universidad de Buenos Aires (UBACyT 2011-2014 No. 20020100100741), and CONICET (PIP 11220110100091).

Abstract in another language

We study theoretically the ultrafast spin dynamics of II-VI diluted magnetic quantum wells in the presence of spin-orbit interaction. We extend a recent study where it was shown that the spin-orbit interaction and the exchange sd coupling in bulk and quantum wells can compete resulting in qualitatively new dynamics when they act simultaneously. We concentrate on Hg 1- x-y Mn x Cd y Te quantum wells, which have a highly tunable Rashba spin-orbit coupling. Our calculations use a recently developed formalism which incorporates electronic correlations originating from the exchange sd -coupling. We find that the dependence of electronic spin oscillations on the excess energy changes qualitatively depending on whether or not the spin-orbit interaction dominates or is of comparable strength with the sd interaction.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: diluted magnetic semiconductors; DMS; spintronics; quantum kinetics; carrier-dopant correlations; spin transfer; exchange interaction; spin polarized carriers; non-Markovian spin dynamics; memory effects; coherent spin dynamics; spin-orbit interaction; magnetic quantum wells; Rashba coupling; ultrafast dynamics
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: 03 Nov 2017 09:11
Last Modified: 03 Nov 2017 09:11
URI: https://eref.uni-bayreuth.de/id/eprint/40266