Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111)
We investigate the shape of monatomic high Cu islands on a Cu(111) surface by variable-temperature scanning tunneling microscopy between 110 K and 240 K. Low temperature dendrites evolve towards more compact shapes at increasing temperature; finally reaching the equilibrium shape of a hexagon with r...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ab944b |
| _version_ | 1797750228413054976 |
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| author | C Sprodowski K Morgenstern |
| author_facet | C Sprodowski K Morgenstern |
| author_sort | C Sprodowski |
| collection | DOAJ |
| description | We investigate the shape of monatomic high Cu islands on a Cu(111) surface by variable-temperature scanning tunneling microscopy between 110 K and 240 K. Low temperature dendrites evolve towards more compact shapes at increasing temperature; finally reaching the equilibrium shape of a hexagon with rounded corners. Time-lapsed imaging at increasing temperature reveals the onset of shape change to be at ≈170 K, corresponding to the onset of edge and corner diffusion of atoms along the island’s borders. Despite a substantial variation for individual islands at each temperature, the mean fractal dimension increases monotonously between 170 K up to 240 K, from the smallest to the largest values feasible for islands grown on surfaces. |
| first_indexed | 2024-03-12T16:30:39Z |
| format | Article |
| id | doaj.art-8d0f359b4f2d4d158f4c13c9ae79d81a |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:30:39Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-8d0f359b4f2d4d158f4c13c9ae79d81a2023-08-08T15:31:54ZengIOP PublishingNew Journal of Physics1367-26302020-01-0122606305510.1088/1367-2630/ab944bTemperature-dependent change of the fractal dimension of Cu dendrites on Cu(111)C Sprodowski0K Morgenstern1Institut für Festkörperphysik, Leibniz Universität Hannover , Appelstr. 2, D-30167 Hannover, GermanyRuhr-Universität Bochum , Lehrstuhl für physikalische Chemie I, Universitätsstr. 150, D-44801 Bochum, GermanyWe investigate the shape of monatomic high Cu islands on a Cu(111) surface by variable-temperature scanning tunneling microscopy between 110 K and 240 K. Low temperature dendrites evolve towards more compact shapes at increasing temperature; finally reaching the equilibrium shape of a hexagon with rounded corners. Time-lapsed imaging at increasing temperature reveals the onset of shape change to be at ≈170 K, corresponding to the onset of edge and corner diffusion of atoms along the island’s borders. Despite a substantial variation for individual islands at each temperature, the mean fractal dimension increases monotonously between 170 K up to 240 K, from the smallest to the largest values feasible for islands grown on surfaces.https://doi.org/10.1088/1367-2630/ab944bfractal dimensiontime-lapsed STMshape evolution |
| spellingShingle | C Sprodowski K Morgenstern Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) New Journal of Physics fractal dimension time-lapsed STM shape evolution |
| title | Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) |
| title_full | Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) |
| title_fullStr | Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) |
| title_full_unstemmed | Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) |
| title_short | Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111) |
| title_sort | temperature dependent change of the fractal dimension of cu dendrites on cu 111 |
| topic | fractal dimension time-lapsed STM shape evolution |
| url | https://doi.org/10.1088/1367-2630/ab944b |
| work_keys_str_mv | AT csprodowski temperaturedependentchangeofthefractaldimensionofcudendritesoncu111 AT kmorgenstern temperaturedependentchangeofthefractaldimensionofcudendritesoncu111 |