Coulomb-coupling in vertically aligned self-assembled InAs quantum dots
- 1 January 1999
- journal article
- Published by IOP Publishing in Nanotechnology
- Vol. 10 (1) , 14-18
- https://doi.org/10.1088/0957-4484/10/1/004
Abstract
Electronic coupling effects in vertically aligned self-assembled InAs quantum dots are investigated using capacitance and far-infrared (FIR) spectroscopy. Capacitance spectra show distinct shifts of the many-particle ground state energies, which is the result of a strong electrostatic dot-dot interaction. FIR spectroscopy shows that the dynamics of the dot system is only slightly affected by Coulomb interaction. The dots in the second layer are found to have a larger diameter than those in the first.Keywords
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