Martins, Luiz Gustavo PimentaMatos, Matheus Josué de SouzaPaschoal, Alexandre R.Freire, Paulo T. C.Andrade, Nádia Ferreira deAguiar, Acrisio Lins deKong, JingNeves, Bernardo Ruegger AlmeidaOliveira, Alan Barros deMazzoni, Mario Sergio de CarvalhoSouza Filho, Antonio GomesCançado, Luiz Gustavo de Oliveira Lopes2018-02-012018-02-012017MARTINS, L. G. P. et al. Raman evidence for pressure-induced formation of diamondene. Nature Communications, v. 8, p. 96-105, 2017. Disponível em: <https://www.nature.com/articles/s41467-017-00149-8#additional-information>. Acesso em: 16 jan. 2018.2041-1723 http://www.repositorio.ufop.br/handle/123456789/9404Despite the advanced stage of diamond thin-film technology, with applications ranging from superconductivity to biosensing, the realization of a stable and atomically thick two-dimensional diamond material, named here as diamondene, is still forthcoming. Adding to the outstanding properties of its bulk and thin-film counterparts, diamondene is predicted to be a ferromagnetic semiconductor with spin polarized bands. Here, we provide spectroscopic evidence for the formation of diamondene by performing Raman spectroscopy of double-layer graphene under high pressure. The results are explained in terms of a breakdown in the Kohn anomaly associated with the finite size of the remaining graphene sites surrounded by the diamondene matrix. Ab initio calculations and molecular dynamics simulations are employed to clarify the mechanism of diamondene formation, which requires two or more layers of graphene subjected to high pressures in the presence of specific chemical groups such as hydroxyl groups or hydrogens.en-USabertoArtigo publicado em periodicoThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Fonte: o próprio artigo.https://doi.org/10.1038/s41467-017-00149-8