Monte Carlo derived diffusion parameters for Ga on the GaAs(001)- (2×4) surface: A molecular beam epitaxy–scanning tunneling microscopy study
| العنوان: | Monte Carlo derived diffusion parameters for Ga on the GaAs(001)- (2×4) surface: A molecular beam epitaxy–scanning tunneling microscopy study |
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| المؤلفون: | Vincent LaBella, D. W. Bullock, Paul Thibado, Z. Ding, W. G. Harter, C. Emery |
| المصدر: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 18:1526-1531 |
| بيانات النشر: | American Vacuum Society, 2000. |
| سنة النشر: | 2000 |
| مصطلحات موضوعية: | Surface diffusion, Number density, Materials science, Condensed matter physics, Monte Carlo method, Surfaces and Interfaces, Substrate (electronics), Condensed Matter Physics, Molecular physics, Surfaces, Coatings and Films, law.invention, Gallium arsenide, chemistry.chemical_compound, chemistry, law, Diffusion (business), Scanning tunneling microscope, Molecular beam epitaxy |
| الوصف: | The migration of individual Ga atoms on the technologically important GaAs(001)-(2×4) reconstructed surface has been studied as a function of substrate temperature and As4 pressure using a combined molecular beam epitaxy and scanning tunneling microscope ultrahigh vacuum multichamber facility. We have deposited 10% of a plane of Ga onto a GaAs(001) surface with a low defect density ( 0.5 μm) to avoid the influence of surface defects like step edges and vacancies. Both the island number density and the geometry are measured and compared to Monte Carlo solid-on-solid simulations. Basic diffusion parameters, such as the activation energy, directional hopping-rate ratio, directional sticking-probability ratio, etc., are reported. |
| تدمد: | 1520-8559 0734-2101 |
| DOI: | 10.1116/1.582379 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::57c953d74316c213fe74ef82ca488ed3 https://doi.org/10.1116/1.582379 |
| رقم الانضمام: | edsair.doi...........57c953d74316c213fe74ef82ca488ed3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15208559 07342101 |
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| DOI: | 10.1116/1.582379 |