Nonlinear optical response and spontaneous polarization in layer-stacked gallenene using second harmonic generation
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| Format: | Preprint |
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2024
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| author | Yunusa, Muhammad Schulz, Andrew K. Parker, Tim Schneider, Felix Elibol, Kenan Predel, Marius Dzíbelová, Jana Rebmann, Michel Gorkan, Taylan van Aken, Peter A. Meixner, Alfred J. Durgun, Engin Kotakoski, Jani Zhang, Dai Sitti, Metin |
| author_facet | Yunusa, Muhammad Schulz, Andrew K. Parker, Tim Schneider, Felix Elibol, Kenan Predel, Marius Dzíbelová, Jana Rebmann, Michel Gorkan, Taylan van Aken, Peter A. Meixner, Alfred J. Durgun, Engin Kotakoski, Jani Zhang, Dai Sitti, Metin |
| contents | Gallenene is a promising low-dimensional material with a structure down to the thickness of a single atom, similar to graphene. However, van der Waals stacking of two-dimensional (2D) gallenene under confinement remain poorly understood. In this study, we present evidence of the formation of parallel-stacked hexagonal gallenene (a100) structures in liquid gallium. The present study demonstrates the AB stacking of 2D gallenene a100 crystals in liquid gallium sandwiched between two graphene layers, as observed through transmission electron microscopy. A nonlinear optical response of the confined hexagonal gallenene was investigated through second harmonic generation (SHG) microscopy. The SHG signal exhibits periodic peak intensity shifts upon angular rotation up to 90 degrees and intensity dampening at elevated temperatures. These findings offer insights on device applications of 2D gallenene. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_00461 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nonlinear optical response and spontaneous polarization in layer-stacked gallenene using second harmonic generation Yunusa, Muhammad Schulz, Andrew K. Parker, Tim Schneider, Felix Elibol, Kenan Predel, Marius Dzíbelová, Jana Rebmann, Michel Gorkan, Taylan van Aken, Peter A. Meixner, Alfred J. Durgun, Engin Kotakoski, Jani Zhang, Dai Sitti, Metin Materials Science Mesoscale and Nanoscale Physics Gallenene is a promising low-dimensional material with a structure down to the thickness of a single atom, similar to graphene. However, van der Waals stacking of two-dimensional (2D) gallenene under confinement remain poorly understood. In this study, we present evidence of the formation of parallel-stacked hexagonal gallenene (a100) structures in liquid gallium. The present study demonstrates the AB stacking of 2D gallenene a100 crystals in liquid gallium sandwiched between two graphene layers, as observed through transmission electron microscopy. A nonlinear optical response of the confined hexagonal gallenene was investigated through second harmonic generation (SHG) microscopy. The SHG signal exhibits periodic peak intensity shifts upon angular rotation up to 90 degrees and intensity dampening at elevated temperatures. These findings offer insights on device applications of 2D gallenene. |
| title | Nonlinear optical response and spontaneous polarization in layer-stacked gallenene using second harmonic generation |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2412.00461 |