North Carolina Central University (NCCU) research scientist Karen Dvoyan presented an abstract titled "To the Theory of the Analytical
Investigation of Quantum Dot Systems with Nontrivial Geometry" at Paul
Sharrah Lecture Hall Friday, Nov. 18.
The description of the abstract is
as follows:
“We present the results of the theoretical analysis of the
electronic and optical properties and exotic states in the quantum dots (QDs),
layered QDs and quantum-dot-molecules (QDMs) having non-trivial geometry. We
utilize the analytical method of the ‘geometric adiabatic approximation,’ which
is based on a significant difference between the nanostructure sizes in
different geometric directions. We discuss the energy spectrum configuration
and light absorption dependence on the QDs and QDMs geometrical parameters, as
well as on the external electrical and magnetic fields intensities when
applied. For the QDM consisting of two QDs, the method allows to obtain the
analytical dependence of the QDM energy spectrum and the probability of an
electron tunneling on the QDs centers' relative distance. For the laterally
stacked QDMs with many QD components, we suggest a single confining potential
to describe the structures' tunneling properties.”
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