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| Hauptverfasser: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2409.10628 |
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| _version_ | 1866912031049777152 |
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| author | Jiang, Hailing Wang, Tao Zhang, Zhenyu Shi, Ruochen Xu, Xifan Sheng, Bowen Liu, Fang Ge, Weikun Wang, Ping Shen, Bo Gao, Peng Lindsay, Lucas R Wang, Xinqiang |
| author_facet | Jiang, Hailing Wang, Tao Zhang, Zhenyu Shi, Ruochen Xu, Xifan Sheng, Bowen Liu, Fang Ge, Weikun Wang, Ping Shen, Bo Gao, Peng Lindsay, Lucas R Wang, Xinqiang |
| contents | Phonon resistance from dislocation scattering is often divided into short-range core interactions and long-range strain field interactions. Using electron energy-loss spectroscopy on a GaN dislocation, we report observations of vibrational modes localized at specific core atoms (short-range) and strain-driven phonon energy shifts around the dislocation (long-range). Ab initio calculations support these findings and draw out additional details. This study reveals atomically resolved vibrational spectra of dislocations, thus offering insights for engineering improved material functionalities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_10628 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Single-atom-resolved vibrational spectroscopy of a dislocation Jiang, Hailing Wang, Tao Zhang, Zhenyu Shi, Ruochen Xu, Xifan Sheng, Bowen Liu, Fang Ge, Weikun Wang, Ping Shen, Bo Gao, Peng Lindsay, Lucas R Wang, Xinqiang Materials Science Phonon resistance from dislocation scattering is often divided into short-range core interactions and long-range strain field interactions. Using electron energy-loss spectroscopy on a GaN dislocation, we report observations of vibrational modes localized at specific core atoms (short-range) and strain-driven phonon energy shifts around the dislocation (long-range). Ab initio calculations support these findings and draw out additional details. This study reveals atomically resolved vibrational spectra of dislocations, thus offering insights for engineering improved material functionalities. |
| title | Single-atom-resolved vibrational spectroscopy of a dislocation |
| topic | Materials Science |
| url | https://arxiv.org/abs/2409.10628 |