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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.12455 |
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| _version_ | 1866916575845548032 |
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| author | Buljan, M. Pinto, S. R. C. Rolo, A. G. Martín-Sánchez, J. Gomes, M. J. M. Grenzer, J. Mücklich, A. Bernstorff, S. Holý, V. |
| author_facet | Buljan, M. Pinto, S. R. C. Rolo, A. G. Martín-Sánchez, J. Gomes, M. J. M. Grenzer, J. Mücklich, A. Bernstorff, S. Holý, V. |
| contents | In this work we report on a self-assembled growth of a Ge quantum dot lattice in a single 600-nm-thick Ge+Al2O3 layer during magnetron sputtering deposition of a Ge+Al2O3 mixture at an elevated substrate temperature. The self-assembly results in the formation of a well-ordered threedimensional body-centered tetragonal quantum dot lattice within the whole deposited volume. The quantum dots formed are very small in size less than 4.0 nm, have a narrow size distribution and a large packing density. The parameters of the quantum dot lattice can be tuned by changing the deposition parameters. The self-ordering of the quantum dots is explained by diffusionmediated nucleation and surface-morphology effects and simulated by a kinetic Monte Carlo model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_12455 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Self-assembling of Ge quantum dots in an alumina matrix Buljan, M. Pinto, S. R. C. Rolo, A. G. Martín-Sánchez, J. Gomes, M. J. M. Grenzer, J. Mücklich, A. Bernstorff, S. Holý, V. Materials Science In this work we report on a self-assembled growth of a Ge quantum dot lattice in a single 600-nm-thick Ge+Al2O3 layer during magnetron sputtering deposition of a Ge+Al2O3 mixture at an elevated substrate temperature. The self-assembly results in the formation of a well-ordered threedimensional body-centered tetragonal quantum dot lattice within the whole deposited volume. The quantum dots formed are very small in size less than 4.0 nm, have a narrow size distribution and a large packing density. The parameters of the quantum dot lattice can be tuned by changing the deposition parameters. The self-ordering of the quantum dots is explained by diffusionmediated nucleation and surface-morphology effects and simulated by a kinetic Monte Carlo model. |
| title | Self-assembling of Ge quantum dots in an alumina matrix |
| topic | Materials Science |
| url | https://arxiv.org/abs/2501.12455 |