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Sensitivity of Exciton Spin Relaxation in Quantum Dots to Confining Potential
S. Mackowski, T. Gurung, H. E. Jackson +4
We observe a strong dependence of the exciton spin relaxation in CdTe quantum dots on the average dot size and the depth of the confining potential. For the excitons confined to th…
Optical Studies of Zero-Field Magnetization of CdMnTe Quantum Dots: Influence of Average Size and Composition of Quantum Dots
T. Gurung, S. Mackowski, H. E. Jackson +4
We show that through the resonant optical excitation of spin-polarized excitons into CdMnTe magnetic quantum dots, we can induce a macroscopic magnetization of the Mn impurities. W…
Sub-Wavelength Multi-Channel Imaging Using a Solid Immersion Lens: Spectroscopy of Excitons in Single Quantum Dots
K. P. Hewaparakrama, S. Mackowski, H. E. Jackson +3
We demonstrate sub-wavelength imaging of excitons confined to single CdTe quantum dots. By combining slit-confocal microscopy with a hemispherical solid immersion lens we simultane…
Optically Induced Magnetization of CdMnTe Self-Assembled Quantum Dots
S. Mackowski, T. Gurung, T. A. Nguyen +4
We demonstrate that resonant excitation of CdMnTe self-assembled quantum dots creates an ensemble of spin-polarized magnetic polarons at B=0 T. The strong spatial confinement chara…