EFFECTS OF STRAIN IN SELF-ASSEMBLED CYLINDRICAL QUANTUM DOT

Abstract

In this work it was calculated the electronic structure of a self-assembled cylindrical quantum dot under the influence of axial strain. The model used to perform the calculation was based on the Kane´s 6×6 k.p Hamiltonian which takes into account the strong mixing between the conduction and valence band and allows studying the set of symmetries associated with these electronic states and effects of strain. As an application, the electronic structure in quantum dots ZnxCd1-xTe/CdTe and ZnxCd1-xSe/ZnSe was calculated for two values of concentration x, and the changes in the character of the valence band states due to strain was discussed. Keywords: cylindrical quantum dot, electronic structure, k.p Hamiltonian, strain, symmetries.