| Autor: |
Latychevskaia, Tatiana, Wicki, Flavio, Escher, Conrad, Fink, Hans-Werner |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Ultramicroscopy, Volume 182, Pages 276-282, 2017 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.ultramic.2017.07.019 |
| Popis: |
While imaging individual atoms can routinely be achieved in high resolution transmission electron microscopy, visualizing the potential distribution of individually charged adsorbates leading to a phase shift of the probing electron wave is still a challenging task. Low-energy electrons (30 - 250 eV) are sensitive to localized potential gradients. We employed low-energy electron holography to acquire in-line holograms of individual charged impurities on free-standing graphene. By applying an iterative phase retrieval reconstruction routine we recover the potential distribution of the localized charged impurities present on free-standing graphene. |
| Databáze: |
arXiv |
| Externí odkaz: |
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