Summary
Plumbene is a material made up of a single layer of lead atoms.[1][2][3] The material is created in a process similar to that of graphene, silicene, germanene, and stanene, in which high vacuum and high temperature are used to deposit a layer of lead atoms on a substrate. High-quality thin films of plumbene have revealed two-dimensional honeycomb structures. First researched by Indian scientists, further investigations are being done around the world.
Preparation and structure edit
In April 2019, J. Yuhara and others reported the deposition of a single atom thickness by molecular beam epitaxy with a segregation method upon a palladium surface in a crystal lattice with Miller indices (111). The structure was confirmed with scanning tunneling microscopy (STM) revealing a nearly flat honeycomb structure.[4] There is no evidence of any three-dimensional islands, but one notices a unique nanostructured tessellation all over the terraces looking like a space-filling polyhedral foam reduced to dimension 2.
Properties edit
Plumbene's electronic and optical properties have been determined from ab initio calculations, indicating a band gap of 0.4 eV. [5][1]
References edit
- ^ a b Das, Dhiman Kumar; Sarkar, Jit; Singh, S. K. (2018-08-01). "Effect of sample size, temperature and strain velocity on mechanical properties of plumbene by tensile loading along longitudinal direction: A molecular dynamics study". Computational Materials Science. 151: 196–203. doi:10.1016/j.commatsci.2018.05.006. S2CID 139217230.
- ^ Wang, Pei-ji; Ping Li; Zhang, Bao-min; Yan, Shi-shen; Sheng-shi Li; Zhang, Run-wu; Ji, Wei-xiao; Yan, Shi-shen; Zhang, Chang-wen (2016-02-02). "Unexpected Giant-Gap Quantum Spin Hall Insulator in Chemically Decorated Plumbene Monolayer". Scientific Reports. 6. Nature: 20152. Bibcode:2016NatSR...620152Z. doi:10.1038/srep20152. PMC 4735859. PMID 26833133.
- ^ Zhang, Liang; Zhao, Hui; Ji, Wei-xiao; Zhang, Chang-wen; Li, Ping; Wang, Pei-ji (2018). "Discovery of a new quantum spin Hall phase in bilayer plumbene". Chemical Physics Letters. 712: 78–82. Bibcode:2018CPL...712...78Z. doi:10.1016/j.cplett.2018.09.016. ISSN 0009-2614. S2CID 105573942.
- ^ Yuhara, J.; He, B.; Le Lay, G. (2019). "Graphene's Latest Cousin: Plumbene Epitaxial Growth on a "Nano WaterCube"". Advanced Materials. 31 (27): 1901017. Bibcode:2019AdM....3101017Y. doi:10.1002/adma.201901017. PMID 31074927. S2CID 149446617.
- ^ Yu, X.-L.; Huang, L.; Wu, J. (2017), "From a normal insulator to a topological insulator in plumbene", Physical Review B, 95 (12): 125113, arXiv:1702.07447, Bibcode:2017PhRvB..95l5113Y, doi:10.1103/PhysRevB.95.125113, S2CID 119076198