Structural stability and electronic properties of graphene/germanene heterobilayer
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 grap...
| Main Authors: | , , , , , |
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| Format: | Article |
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Elsevier BV
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/95187/ |
| _version_ | 1848862092458721280 |
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| author | Hamid, Mohamad Amin Chan, Kar Tim Raymond Ooi, Chong Heng Zainuddin, Hishamuddin Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin |
| author_facet | Hamid, Mohamad Amin Chan, Kar Tim Raymond Ooi, Chong Heng Zainuddin, Hishamuddin Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin |
| author_sort | Hamid, Mohamad Amin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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 pz-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 × 10−4 . |
| first_indexed | 2025-11-15T13:11:32Z |
| format | Article |
| id | upm-95187 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:11:32Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-951872023-01-31T04:11:21Z http://psasir.upm.edu.my/id/eprint/95187/ Structural stability and electronic properties of graphene/germanene heterobilayer Hamid, Mohamad Amin Chan, Kar Tim Raymond Ooi, Chong Heng Zainuddin, Hishamuddin Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin 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 pz-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 × 10−4 . Elsevier BV 2021 Article PeerReviewed Hamid, Mohamad Amin and Chan, Kar Tim and Raymond Ooi, Chong Heng and Zainuddin, Hishamuddin and Mohd Shah, Nurisya and Shahrol Nidzam, Nazirul Nazrin (2021) Structural stability and electronic properties of graphene/germanene heterobilayer. Results in Physics, 28. art. no. 4545. pp. 1-7. ISSN 2211-3797 https://www.sciencedirect.com/science/article/pii/S2211379721006483 10.1016/j.rinp.2021.104545 |
| spellingShingle | Hamid, Mohamad Amin Chan, Kar Tim Raymond Ooi, Chong Heng Zainuddin, Hishamuddin Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin Structural stability and electronic properties of graphene/germanene heterobilayer |
| title | Structural stability and electronic properties of graphene/germanene heterobilayer |
| title_full | Structural stability and electronic properties of graphene/germanene heterobilayer |
| title_fullStr | Structural stability and electronic properties of graphene/germanene heterobilayer |
| title_full_unstemmed | Structural stability and electronic properties of graphene/germanene heterobilayer |
| title_short | Structural stability and electronic properties of graphene/germanene heterobilayer |
| title_sort | structural stability and electronic properties of graphene/germanene heterobilayer |
| url | http://psasir.upm.edu.my/id/eprint/95187/ http://psasir.upm.edu.my/id/eprint/95187/ http://psasir.upm.edu.my/id/eprint/95187/ |