1 / 23

Surface Diffusion and Elasticity in SiGe Heterostructures: Continuum Approach

lea
Download Presentation

Surface Diffusion and Elasticity in SiGe Heterostructures: Continuum Approach

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Surface Diffusion and Elasticity in SiGe Heterostructures: Continuum Approach Martin Burger UCLA

    2. Quantum Dot Growth

    3. SiGe Heterostructures Basic mechanism of growth: Asaro-Grinfeld-Tiller instability Lattice mismatch (4,2 %) causes misfit strain - reliefed by surface roughening

    4. SiGe Heterostructures

    5. PbSe/PbEuTe Heterostructures

    6. InAs/InGaAs/GaAs Heterostructures

    7. Equilibrium Shapes

    8. Continuum Model

    9. Chemical Potential Chemical potential is determined by energy gradient:

    10. Surface Diffusion

    11. Equation for Film Height

    12. Numerical Simulation Supplemented by usual boundary conditions Supplemented by usual boundary conditions

    13. Numerical Solution, 2 D

    14. Simulation, 2 D

    15. Simulation, 2 D

    16. Simulation, 2 D

    17. Simulation, 2 D

    18. Simulation, 2 D

    19. Simulation, 2 D

    20. Numerical Solution, 3 D

    21. Simulation, 3 D

    22. Numerical Solution, 3 D

    23. Intermixing Effects

    24. Dynamic Intermixing

More Related