Microwave Energy Drives “On–Off–On” Spin-Switch Behavior in Nitrogen-Doped Graphene

Author(s)
Giorgio Zoppellaro, Aristides Bakandritsos, Jiří Tuček, Piotr Błoński, Toma Susi, Petr Lazar, Zdeněk Bad'ura, Tomáš Steklý, Ariana Opletalová, Michal Otyepka, Radek Zbořil
Abstract

The established application of graphene in organic/inorganic spin-valve spintronic assemblies is as a spin-transport channel for spin-polarized electrons injected from ferromagnetic substrates. To generate and control spin injection without such substrates, the graphene backbone must be imprinted with spin-polarized states and itinerant-like spins. Computations suggest that such states should emerge in graphene derivatives incorporating pyridinic nitrogen. The synthesis and electronic properties of nitrogen-doped graphene (N content: 9.8%), featuring both localized spin centers and spin-containing sites with itinerant electron properties, are reported. This material exhibits spin-switch behavior (on–off–on) controlled by microwave irradiation at X-band frequency. This phenomenon may enable the creation of novel types of switches, filters, and spintronic devices using sp2-only 2D systems.

Organisation(s)
Physics of Nanostructured Materials
Journal
Advanced Materials
No. of pages
9
ISSN
0935-9648
DOI
https://doi.org/10.1002/adma.201902587
Publication date
08-2019
Publication status
E-pub ahead of print
Peer reviewed
Yes
Austrian Fields of Science 2012
210004 Nanomaterials, 210006 Nanotechnology, 103017 Magnetism, 103018 Materials physics
Keywords
fluorographene, nitrogen doping, spin switch, spin-polarized states, spintronics
ASJC Scopus subject areas
Materials Science(all), Mechanics of Materials, Mechanical Engineering
Portal url
https://ucris.univie.ac.at/portal/en/publications/microwave-energy-drives-onoffon-spinswitch-behavior-in-nitrogendoped-graphene(6d72d6b6-4f6e-45d7-9158-c682c9ee6336).html