The non-uniform composition profile in Ge(Si)/Si(001) quantum dots
The composition profile of a pyramid-shaped Ge(Si)/Si(001) quantum dot has been calculated using a combination of molecular static relaxations and a Monte Carlo process. The strain field and the displacement field of the non-uniformly alloyed quantum dot have been calculated using finite element ana...
| Main Authors: | , , |
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| Formato: | Conference item |
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2004
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| _version_ | 1826284345406521344 |
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| author | Lang, C Nguyen-Manh, D Cockayne, D |
| author_facet | Lang, C Nguyen-Manh, D Cockayne, D |
| author_sort | Lang, C |
| collection | OXFORD |
| description | The composition profile of a pyramid-shaped Ge(Si)/Si(001) quantum dot has been calculated using a combination of molecular static relaxations and a Monte Carlo process. The strain field and the displacement field of the non-uniformly alloyed quantum dot have been calculated using finite element analysis and compared to the case of a uniform alloying profile. TEM image simulations based on the displacements calculated in the finite element analysis have been performed. It is found that the differences in the contrast between uniformly and non-uniformly alloyed pyramid-shaped quantum dots are not significant. |
| first_indexed | 2024-03-07T01:12:27Z |
| format | Conference item |
| id | oxford-uuid:8d8037fa-a5eb-464c-836b-f1365f7e4f1a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:12:27Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:8d8037fa-a5eb-464c-836b-f1365f7e4f1a2022-03-26T22:51:31ZThe non-uniform composition profile in Ge(Si)/Si(001) quantum dotsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:8d8037fa-a5eb-464c-836b-f1365f7e4f1aSymplectic Elements at Oxford2004Lang, CNguyen-Manh, DCockayne, DThe composition profile of a pyramid-shaped Ge(Si)/Si(001) quantum dot has been calculated using a combination of molecular static relaxations and a Monte Carlo process. The strain field and the displacement field of the non-uniformly alloyed quantum dot have been calculated using finite element analysis and compared to the case of a uniform alloying profile. TEM image simulations based on the displacements calculated in the finite element analysis have been performed. It is found that the differences in the contrast between uniformly and non-uniformly alloyed pyramid-shaped quantum dots are not significant. |
| spellingShingle | Lang, C Nguyen-Manh, D Cockayne, D The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title | The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title_full | The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title_fullStr | The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title_full_unstemmed | The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title_short | The non-uniform composition profile in Ge(Si)/Si(001) quantum dots |
| title_sort | non uniform composition profile in ge si si 001 quantum dots |
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