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Electron–hole complexes in self-assembled quantum dots in strong magnetic fields |
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| Authors: | S J Cheng W Sheng P Hawrylak S Raymond S Studenikin A Sachrajda Z Wasilewski A Babinski M Potemski G Ortner M Bayer |
| Institution: | a Institute for Microstructure Sciences, National Research Council Canada, Ottawa, Canada K1A 0R6;b Grenoble High Magnetic Field Laboratory, MPI/FKF and CNRS, 38042, Grenoble, France;c Experimental Physik II, Universitat Dortmund, D-44221, Dortmund, Germany |
| Abstract: | We present results of calculations and experiments on electron–hole complexes in InGaAs/GaAs self-assembled quantum dots in high magnetic field (B). Due to hidden symmetries, the chemical potential of an N-exciton system at special B fields becomes insensitive to the exciton number as well as the magnetic field. This results in plateau regions of high intensity in measured magneto-PL spectrum. Theoretical calculations using exact diagonalization techniques successfully explain the measured magneto-photoluminescence spectrum with B fields up to 28 T. |
| Keywords: | Author Keywords: Quantum dot Exciton Electron– hole complexes |
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