2 research outputs found
Predicion of charge separation in GaAs/AlAs cylindrical Russian Doll nanostructures
We have contrasted the quantum confinement of (i) multiple quantum wells of
flat GaAs and AlAs layers, i.e. (\GaAs)_{m}/(\AlAs)_n/(\GaAs)_p/(\AlAs)_q,
with (ii) ``cylindrical Russian Dolls'' -- an equivalent sequence of wells and
barriers arranged as concentric wires. Using a pseudopotential plane-wave
calculation, we identified theoretically a set of numbers ( and )
such that charge separation can exist in ``cylindrical Russian Dolls'': the CBM
is localized in the inner GaAs layer, while the VBM is localized in the outer
GaAs layer.Comment: latex, 8 page