TITLE

Symmetry analysis and exact model for the elastic, piezoelectric, and electronic properties of inhomogeneous and strained wurtzite quantum nanostructures

AUTHOR(S)
Even, J.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A symmetry analysis and a semianalytical exact model are proposed to describe the mechanical, piezoelectric, and electronic properties of strained wurtzite quantum nanostructures with axial symmetry. An expression of the piezoelectric polarization is given as a function of inhomogeneous strains. The three-dimensional 8×8 strained kp Hamiltonian is reduced to two-dimensional using the total angular momentum representation. When the spin-orbit coupling is neglected, the Hamiltonians are reduced to 1×1 and 3×3 Hamiltonians for the states in the S-shell. For all the other shells, the fourfold degeneracy is demonstrated. Simulations are performed for InN/GaN quantum dots.
ACCESSION #
37043701

 

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