One and two phonon assisted transitions between exciton spin states in a quantum dot

Title data

Roszak, Katarzyna ; Machnikowski, Paweł ; Axt, Vollrath Martin ; Kuhn, Tilmann:
One and two phonon assisted transitions between exciton spin states in a quantum dot.
In: Acta Physica Polonica A. Vol. 114 (2008) Issue 5 . - pp. 1329-1335.
ISSN 1898-794X
DOI: https://doi.org/10.12693/APhysPolA.114.1329

Official URL:

Abstract in another language

Exciton spin decay is studied in a self-assembled InAs/GaAs quantum dot. The spin relaxation results from an interplay of two factors: the Bir-Pikus Hamiltonian and the short-range exchange interaction, leading to one and two phonon assisted transitions. We establish a hierarchy between the resulting transition rates and show the dominating role of transverse phonons for all the transitions.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	quantum dot; non-linear optics; ultrafast dynamics; phonons; excitons; Pikus Bir interaction, spin-orbit coupling, dark states, short range exchange interaction, spin relaxation, exciton spin
Subject classification:	condensed matter physics (theoretical)
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:	27 Oct 2017 07:09
Last Modified:	08 Mar 2022 13:12
URI:	https://eref.uni-bayreuth.de/id/eprint/40183