Electronic Structure of Hetero-Crystalline Superlattices
نویسندگان
چکیده
In the present thesis we implement a simple numerical method to solve a onedimensional time-independent Schrödinger equation in any arbitrary periodic potential. We apply this method to study the energy band structure, the Bloch wavefunctions and the 1D-density of states of a simple 1D-superlattice model. The results obtained for this model exhibit nontrivial features of real hetero-crystalline superlattices. Several of these features can be understood in terms of a one-band effective mass model which is one of the simplest electronic-structure approaches for superlattices. This approach is then applied to obtain the energies of the conduction electrons in a model for a perfect GaAs/Ga0.8Al0.2As superlattice and its 3D-density of states. Advisor: Prof. Nicola Manini Co-Advisor: Prof. Giovanni Onida
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