Surface-Confined Two-Dimensional Crystal Growth on a Monolayer
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909077737570304 |
|---|---|
| author | Jia, Yanyu Yuan, Fang Cheng, Guangming Tang, Yue Yu, Guo Song, Tiancheng Wang, Pengjie Singha, Ratnadwip Uzan, Ayelet July Onyszczak, Michael Watanabe, Kenji Taniguchi, Takashi Yao, Nan Schoop, Leslie M Wu, Sanfeng |
| author_facet | Jia, Yanyu Yuan, Fang Cheng, Guangming Tang, Yue Yu, Guo Song, Tiancheng Wang, Pengjie Singha, Ratnadwip Uzan, Ayelet July Onyszczak, Michael Watanabe, Kenji Taniguchi, Takashi Yao, Nan Schoop, Leslie M Wu, Sanfeng |
| contents | Conventional vapor deposition or epitaxial growth of two-dimensional (2D) materials and heterostructures is conducted in a large chamber in which masses transport from the source to the substrate. Here we report a chamber-free, on-chip approach for growing a 2D crystalline structures directly in a nanoscale surface-confined 2D space. The method is based on a surprising discovery of a rapid, long-distance, non-Fickian transport of a uniform layer of atomically thin palladium (Pd) on a monolayer crystal of tungsten ditelluride (WTe2), at temperatures well below the known melting points of all materials involved. The resulting nanoconfined growth realizes a controlled formation of a stable new 2D crystalline material, Pd7WTe2 , when the monolayer seed is either free-standing or fully encapsulated in a van der Waals stack. The approach is generalizable and highly compatible with nanodevice fabrication, promising to expand the library of 2D materials and their functionalities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_06477 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Surface-Confined Two-Dimensional Crystal Growth on a Monolayer Jia, Yanyu Yuan, Fang Cheng, Guangming Tang, Yue Yu, Guo Song, Tiancheng Wang, Pengjie Singha, Ratnadwip Uzan, Ayelet July Onyszczak, Michael Watanabe, Kenji Taniguchi, Takashi Yao, Nan Schoop, Leslie M Wu, Sanfeng Mesoscale and Nanoscale Physics Materials Science Conventional vapor deposition or epitaxial growth of two-dimensional (2D) materials and heterostructures is conducted in a large chamber in which masses transport from the source to the substrate. Here we report a chamber-free, on-chip approach for growing a 2D crystalline structures directly in a nanoscale surface-confined 2D space. The method is based on a surprising discovery of a rapid, long-distance, non-Fickian transport of a uniform layer of atomically thin palladium (Pd) on a monolayer crystal of tungsten ditelluride (WTe2), at temperatures well below the known melting points of all materials involved. The resulting nanoconfined growth realizes a controlled formation of a stable new 2D crystalline material, Pd7WTe2 , when the monolayer seed is either free-standing or fully encapsulated in a van der Waals stack. The approach is generalizable and highly compatible with nanodevice fabrication, promising to expand the library of 2D materials and their functionalities. |
| title | Surface-Confined Two-Dimensional Crystal Growth on a Monolayer |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2307.06477 |