Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/33702
Title: Tunable magnetism and spin-polarized electronic transport in graphene mediated by molecular functionalization of extended defects
Keywords: Tunable magnetism
Extended linear defects
Functionalized graphene layers - Magnetic transport
Functionalized graphene layers - Electronic transport
Magnetismo sintonizável
Defeitos lineares prolongados
Camadas de grafeno funcionalizadas - transporte magnético
Camadas de grafeno funcionalizadas - Transporte eletrônico
Issue Date: 2018
Publisher: American Physical Society
Citation: OLIVEIRA, J. B. de et al. Tunable magnetism and spin-polarized electronic transport in graphene mediated by molecular functionalization of extended defects. Physical Review B, New York, v. 97, p. 1-7, 2018. DOI: https://doi.org/10.1103/PhysRevB.97.045107.
Abstract: We use first-principles simulations to investigate the magnetic and the electronic transport properties of functionalized graphene layers upon the presence of extended linear defects (ELDs). We have considered electron-donor molecules, tetrathiafulvalene (TTF), lying on the graphene sites neighboring the ELD (TTF/ELD). Those molecules bond to the graphene sheet mediated by van der Waals interactions, giving rise to a net (molecule→graphene) charge transfer. The n-type doping of graphene, as well as the molecule-graphene interaction, are strengthened by the presence of the ELD. There is a charge density accumulation on the C atoms along the defect sites, promoting the formation of magnetic states in TTF/ELD. We show that such a net magnetization can be modified through an external electric field (Efield). Further electronic transport calculations reveal that the transmission coefficients exhibit a spin anisotropy which can be controlled by the Efield, and thus showing that TTF/ELD is a quite interesting system to realize tunable spin-polarized electronic currents on graphene.
URI: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.045107
http://repositorio.ufla.br/jspui/handle/1/33702
Appears in Collections:DFI - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.