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