Bin Hamid, Mohamad Amin and Tim, Chan Kar and Ooi, Raymond Chong Heng and Zainuddin, Hishamuddin and Shah, Nurisya Mohd and Nidzam, Nazirul Nazrin Shahrol (2021) Structural stability and electronic properties of graphene/germanene heterobilayer. Results in Physics, 28. ISSN 2211-3797, DOI https://doi.org/10.1016/j.rinp.2021.104545.
Full text not available from this repository.Abstract
In this work, the structural and electronic properties of graphene/germanene heterobilayer is investigated by using density functional theory. We find that the graphene and germanene are bounded together mainly by weak van der Waal forces. This is supported by small interlayer binding energy of graphene/germanene heterobilayer. In the heterobilayer, the Dirac cone characteristics of both graphene and germanene layers are well preserved. The band gap opening is found due to the unsaturated p(z)-orbital of germanene layer. Further variation of compressive strain along the normal of the heterobilayer increases the band gap opening in the heterobilayer. Inhomogeneous charge redistribution is found in between graphene and germanene layer, where small charge accumulation region is found in germanene layer while charge depletion region in graphene layer. The total charge accumulations in between graphene and germanene sheets is 5.645 x 10(-4) e.
| Item Type: | Article |
|---|---|
| Funders: | Fundamental Research Grant Scheme (FRGS) by Ministry of Higher Education (FRGS/1/2016/STG02/UPM/02/1) |
| Uncontrolled Keywords: | Density functional theory; Graphene; Germanene; Two-dimensional materials; Heterobilayer |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 11 Aug 2022 07:13 |
| Last Modified: | 11 Aug 2022 07:13 |
| URI: | http://eprints.um.edu.my/id/eprint/28477 |
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