Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of 
Single InxGa1-xAs/GaAs Quantum Dots on the Applied Uniaxial Stress

Jons, K. D.; Hafenbrak, R.; Singh, R.; Ding, F.; Plumhof, J. D.; Rastelli, A.; Schmidt, O. G.; Bester, G.; Michler, P.

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Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In_xGa_1-xAs/GaAs Quantum Dots on the Applied Uniaxial Stress

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Singh, R.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Rastelli, A.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Schmidt, O. G.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Nanostructuring Lab (Jürgen Weis), Max Planck Institute for Solid State Research, Max Planck Society;
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

Bester, G.
Max Planck Society;

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Citation

Jons, K. D., Hafenbrak, R., Singh, R., Ding, F., Plumhof, J. D., Rastelli, A., et al. (2011). Dependence of the Redshifted and Blueshifted Photoluminescence Spectra of Single In_xGa_1-xAs/GaAs Quantum Dots on the Applied Uniaxial Stress. Physical Review Letters, 107(21): 217402.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C15F-E

Abstract

We apply external uniaxial stress to tailor the optical properties of In(x)Ga(1-x)As/GaAs quantum dots. Unexpectedly, the emission energy of single quantum dots controllably shifts to both higher and lower energies under tensile strain. Theoretical calculations using a million atom empirical pseudopotential many-body method indicate that the shifting direction and magnitude depend on the lateral extension and more interestingly on the gallium content of the quantum dots. Our experimental results are in good agreement with the underlying theory.