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- W2076173503 abstract "We present a comparison of the 8-band k⋅p and empirical pseudopotential approaches to describing the electronic structure of pyramidal InAs/GaAs self-assembled quantum dots. We find a generally good agreement between the two methods. The most significant differences found in the k⋅p calculation are (i) a reduced splitting of the electron p states (3 vs 24 meV), (ii) an incorrect in-plane polarization ratio for electron-hole dipole transitions (0.97 vs 1.24), and (iii) an over confinement of both electron (48 meV) and hole states (52 meV), resulting in a band gap error of 100 meV. We introduce a “linear combination of bulk bands” technique which produces results similar to a full direct diagonalization pseudopotential calculation, at a cost similar to the k⋅p method." @default.
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- W2076173503 date "2000-01-17" @default.
- W2076173503 modified "2023-09-23" @default.
- W2076173503 title "Comparison of the k⋅p and direct diagonalization approaches to the electronic structure of InAs/GaAs quantum dots" @default.
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- W2076173503 doi "https://doi.org/10.1063/1.125747" @default.
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