Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface
The three-dimensional (3D) local atomic structures and crystal defects at the interfaces of heterostructures con-trol their electronic, magnetic, optical, catalytic, and topological quantum properties but have thus far eluded any direct experimental determination. Here, we use atomic electron tomogr...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2022
|
| Online Access: | https://hdl.handle.net/1721.1/142477 |
| _version_ | 1811089443748052992 |
|---|---|
| author | Tian, Xuezeng Yan, Xingxu Varnavides, Georgios Yuan, Yakun Kim, Dennis S Ciccarino, Christopher J Anikeeva, Polina Li, Ming-Yang Li, Lain-Jong Narang, Prineha Pan, Xiaoqing Miao, Jianwei |
| author_facet | Tian, Xuezeng Yan, Xingxu Varnavides, Georgios Yuan, Yakun Kim, Dennis S Ciccarino, Christopher J Anikeeva, Polina Li, Ming-Yang Li, Lain-Jong Narang, Prineha Pan, Xiaoqing Miao, Jianwei |
| author_sort | Tian, Xuezeng |
| collection | MIT |
| description | The three-dimensional (3D) local atomic structures and crystal defects at the interfaces of heterostructures con-trol their electronic, magnetic, optical, catalytic, and topological quantum properties but have thus far eluded any direct experimental determination. Here, we use atomic electron tomography to determine the 3D local atomic positions at the interface of a MoS2-WSe2 heterojunction with picometer precision and correlate 3D atomic defects with localized vibrational properties at the epitaxial interface. We observe point defects, bond distortion, and atomic-scale ripples and measure the full 3D strain tensor at the heterointerface. By using the experimental 3D atomic coordinates as direct input to first-principles calculations, we reveal new phonon modes localized at the interface, which are corroborated by spatially resolved electron energy-loss spectroscopy. We expect that this work will pave the way for correlating structure-property relationships of a wide range of heterostructure inter-faces at the single-atom level. |
| first_indexed | 2024-09-23T14:19:16Z |
| format | Article |
| id | mit-1721.1/142477 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:19:16Z |
| publishDate | 2022 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1424772022-05-12T03:13:13Z Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface Tian, Xuezeng Yan, Xingxu Varnavides, Georgios Yuan, Yakun Kim, Dennis S Ciccarino, Christopher J Anikeeva, Polina Li, Ming-Yang Li, Lain-Jong Narang, Prineha Pan, Xiaoqing Miao, Jianwei The three-dimensional (3D) local atomic structures and crystal defects at the interfaces of heterostructures con-trol their electronic, magnetic, optical, catalytic, and topological quantum properties but have thus far eluded any direct experimental determination. Here, we use atomic electron tomography to determine the 3D local atomic positions at the interface of a MoS2-WSe2 heterojunction with picometer precision and correlate 3D atomic defects with localized vibrational properties at the epitaxial interface. We observe point defects, bond distortion, and atomic-scale ripples and measure the full 3D strain tensor at the heterointerface. By using the experimental 3D atomic coordinates as direct input to first-principles calculations, we reveal new phonon modes localized at the interface, which are corroborated by spatially resolved electron energy-loss spectroscopy. We expect that this work will pave the way for correlating structure-property relationships of a wide range of heterostructure inter-faces at the single-atom level. 2022-05-11T16:27:25Z 2022-05-11T16:27:25Z 2021 2022-05-11T16:15:49Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142477 Tian, Xuezeng, Yan, Xingxu, Varnavides, Georgios, Yuan, Yakun, Kim, Dennis S et al. 2021. "Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface." Science Advances, 7 (38). en 10.1126/SCIADV.ABI6699 Science Advances Attribution-NonCommercial-ShareAlike 4.0 https://creativecommons.org/licenses/by-nc/4.0/ application/pdf American Association for the Advancement of Science (AAAS) Science Advances |
| spellingShingle | Tian, Xuezeng Yan, Xingxu Varnavides, Georgios Yuan, Yakun Kim, Dennis S Ciccarino, Christopher J Anikeeva, Polina Li, Ming-Yang Li, Lain-Jong Narang, Prineha Pan, Xiaoqing Miao, Jianwei Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title | Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title_full | Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title_fullStr | Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title_full_unstemmed | Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title_short | Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface |
| title_sort | capturing 3d atomic defects and phonon localization at the 2d heterostructure interface |
| url | https://hdl.handle.net/1721.1/142477 |
| work_keys_str_mv | AT tianxuezeng capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT yanxingxu capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT varnavidesgeorgios capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT yuanyakun capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT kimdenniss capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT ciccarinochristopherj capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT anikeevapolina capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT limingyang capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT lilainjong capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT narangprineha capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT panxiaoqing capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface AT miaojianwei capturing3datomicdefectsandphononlocalizationatthe2dheterostructureinterface |