Effects of the one-dimensional quantum barriers in pyramidal quantum dots

Michelini, F.; Dupertuis, M.-A.; Kapon, E.
May 2004
Applied Physics Letters;5/17/2004, Vol. 84 Issue 20, p4086
Academic Journal
We investigated theoretically the effects of the one-dimensional barriers on the electronic states in a quantum dot grown on a nonplanar substrate. These peculiar barriers drastically modify the confined carrier wave functions and their energies. Connecting the quantum wire to the pyramidal quantum dot leads to an enhancement in the ground to first excited state separation energy and a simultaneous large reduction of the energy size sensitivity.


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