Abstract
We calculate hydrogenic impurity binding energy in quasi-one-dimensional GaAs/AlAs quantum wires with periodical lateral surface structure by making use of a variational approach. By a coordinate transformation, the structured interfaces of the wires are transformed into planar ones so that the boundary conditions of the electronic wave functions can be satisfied exactly on the interfaces. The dependence of the binding energies on the positions of the impurities and on the lateral surface structures is studied.
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