Square selenene and tellurene: novel group VI elemental 2D materials with nontrivial topological properties

Simple item page
dc.citation.articleNumber41003en_US
dc.citation.journalTitle2D Materialsen_US
dc.citation.volumeNumber4en_US
dc.contributor.authorXian, Ledeen_US
dc.contributor.authorPaz, Alejandro Pérezen_US
dc.contributor.authorBianco, Elisabethen_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorRubio, Angelen_US
dc.date.accessioned2017-10-10T21:24:53Zen_US
dc.date.available2017-10-10T21:24:53Zen_US
dc.date.issued2017en_US
dc.description.abstractWith first principles calculations, we predict a novel stable 2D layered structure for group VI elements Se and Te that we call square selenene and square tellurene, respectively. They have chair-like buckled structures similar to other layered materials such as silicene and germanene but with a square unit cell rather than a hexagonal one. This special structure gives rise to anisotropic band dispersions near the Fermi level that can be described by a generalized semi-Dirac Hamiltonian. We show that the considerably large band gap (~0.1 eV) opened by spin-orbit coupling makes square selenene and tellurene topological insulators, hosting non-trivial edge states. Therefore, square selenene and tellurene are promising materials for novel electronic and spintronic applications. Finally, we show that this new type of 2D elemental materials can potentially be grown on proper substrates, such as a Au(1 0 0) surface.en_US
dc.identifier.citationXian, Lede, Paz, Alejandro Pérez, Bianco, Elisabeth, et al.. "Square selenene and tellurene: novel group VI elemental 2D materials with nontrivial topological properties." <i>2D Materials,</i> 4, (2017) IOP Publishing: https://doi.org/10.1088/2053-1583/aa8418.en_US
dc.identifier.digitalSquare_selenene_tellureneen_US
dc.identifier.doihttps://doi.org/10.1088/2053-1583/aa8418en_US
dc.identifier.urihttps://hdl.handle.net/1911/97787en_US
dc.language.isoengen_US
dc.publisherIOP Publishingen_US
dc.rightsOriginal content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/en_US
dc.titleSquare selenene and tellurene: novel group VI elemental 2D materials with nontrivial topological propertiesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Square_selenene_tellurene.pdf
Size:
1.22 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Materials Science and NanoEngineering Publications