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- W2054869631 abstract "ABSTRACT First-principles calculations are used to calculate the strain dependencies of the binding and diffusion-activation energies for Ge adatoms on both Si(001) and Ge(001) c(4×2) reconstructed surfaces. Our calculations reveal that over the range of strains typically sampled during quantum dot self-assembly (0 to 1% compressive strain) the binding and activation energies on a strained Ge(001) surface increase and decrease, respectively, by 0.21 eV and 0.12 eV. For a growth temperature of 600 °C, these strain-dependencies give rise to a 16-fold increase in adatom density and a 5-fold decrease in adatom diffusivity in the region of compressive strain surrounding a Ge island with a characteristic size of 10 nm lying on top of a Si substrate covered by a Ge wetting layer." @default.
- W2054869631 created "2016-06-24" @default.
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- W2054869631 date "2002-01-01" @default.
- W2054869631 modified "2023-09-26" @default.
- W2054869631 title "First-principles calculation of the effect of strain on the diffusion of Ge adatoms on Si and Ge (001) surfaces" @default.
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- W2054869631 doi "https://doi.org/10.1557/proc-749-w20.10" @default.
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