One and Two Phonon Assisted Transitions between Exciton Spin States in a Quantum Dot

• Authors: K. Roszak , P. Machnikowski , V. Axt , T. Kuhn
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

72.25.Rb; 73.21.La; 78.67.Hc

Discipline

• 78.67.Hc: Quantum dots
• 72.25.Rb: Spin relaxation and scattering
• 73.21.La: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 5
• Pages: 1329-1335

Dates

published

2008-11

received

2008-06-07

Contributors

author

K. Roszak

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

P. Machnikowski

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

V. Axt

• Theoretische Physik III, Universität Bayreuth, 95440 Bayreuth, Germany

author

T. Kuhn

• Institut fűr Festkörpertheorie, Universität Műnster, Wilhelm-Klemm-Str. 10, 48149 Műnster, Germany

References

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Identifiers

DOI

10.12693/APhysPolA.114.1329