Abstract
AbstractWe study phonon assisted transitions leading to exciton spin decay in quantum dots. We concentrate on couplings specific to the hole (Bir‐Pikus Hamiltonian) and the exciton as a whole (short‐range exchange interaction). A system strongly confined in a self‐assembled quantum dot is considered.We discuss single‐phonon assisted processes arising from the interplay of these interactions and show the dominating role of transverse phonons. We have also found a new two‐phonon assisted transition, connected with the interplay of different parts of the Bir‐Pikus Hamiltonian in the presence of the singlet‐triplet splitting. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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