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Coherent spin-transfer dynamics in diluted magnetic semiconductor quantum wells even after optical excitation with zero net angular momentum

Title data

Thurn, Christoph ; Cygorek, Moritz ; Axt, Vollrath M. ; Kuhn, Tilmann:
Coherent spin-transfer dynamics in diluted magnetic semiconductor quantum wells even after optical excitation with zero net angular momentum.
In: Physical Review B. Vol. 88 (2013) Issue 16 . - Art.Nr. 161302(R), 4 S..
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.88.161302

Abstract in another language

A quantum kinetic study of correlated spin transfer between optically excited electrons and Mn atoms in a ZnMnSe quantum well is presented. The simulations predict genuine signatures of non-Markovian spin dynamics which are particularly pronounced for special two-color laser excitations with a zero net angular momentum where a Markovian theory predicts an almost zero total electron spin for all times. In contrast, in the quantum kinetic simulations a sizable total electron spin builds up. Subsequently, a coherent oscillatory exchange of spin between the electron and Mn subsystems is observed.

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; two-color laser excitation; quantum wells; coherent spin dynamics; non-Markovian spin dynamics; correlated spin 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: 02 Nov 2017 15:25
Last Modified: 02 Nov 2017 15:25
URI: https://eref.uni-bayreuth.de/id/eprint/40256