TY - JOUR
T1 - Electronic properties of InAs/GaAs self-assembled quantum dots
T2 - Beyond the effective mass approximation
AU - Sheng, Weidong
AU - Leburton, Jean Pierre
PY - 2003/5
Y1 - 2003/5
N2 - The electronic properties of InAs/GaAs self-assembled quantum dots (SAD) are investigated as a function of their shapes, sizes and stoichiometric compositions with an eight-band k · p method. Emphasis is placed on the three-dimensional strain distribution, which is obtained by minimizing the strain energy around the dot region, and the piezoelectric potential, which is calculated by solving the corresponding Poisson equation. Novel features of intraband and interband optical transitions are presented and discussed in relation with the 3D SAD k · p band structure, and their response to external electric fields. Finally, particular attention is paid to the quantum Stark effect in vertically coupled lens-shaped SADs.
AB - The electronic properties of InAs/GaAs self-assembled quantum dots (SAD) are investigated as a function of their shapes, sizes and stoichiometric compositions with an eight-band k · p method. Emphasis is placed on the three-dimensional strain distribution, which is obtained by minimizing the strain energy around the dot region, and the piezoelectric potential, which is calculated by solving the corresponding Poisson equation. Novel features of intraband and interband optical transitions are presented and discussed in relation with the 3D SAD k · p band structure, and their response to external electric fields. Finally, particular attention is paid to the quantum Stark effect in vertically coupled lens-shaped SADs.
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U2 - 10.1002/pssb.200301778
DO - 10.1002/pssb.200301778
M3 - Article
AN - SCOPUS:0038577177
SN - 0370-1972
VL - 237
SP - 394
EP - 404
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
IS - 1
ER -