Interface-Induced Spin Polarization in Graphene on Chromia

Renu Choudhary, Pankaj Kumar, Priyanka Manchanda, David J. Sellmyer, Peter A. Dowben, Arti Kashyap, Ralph Skomski

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The induced spin polarization of graphene on Cr2O3(001) is investigated using density-functional theory (DFT) and model calculations. The magnetic moment in graphene is a proximity effect and can be regarded as a second-order Stoner scenario, and similar mechanisms are likely realized for all graphene systems with an insulating magnetic substrate. In the absence of charge transfer, the magnetic moment would be quadratic in the exchange field, as contrasted to the usually encountered approximately linear dependence. The net magnetization of the graphene is small, of the order of 0.01 μB per atom, but the energy-dependent spin polarization exhibits pronounced peaks that have a disproportionally strong effect on the spin-polarized electron transport and are therefore important for spin-electronics applications.

Original languageEnglish (US)
Article number7407307
JournalIEEE Magnetics Letters
Volume7
DOIs
StatePublished - Jan 1 2016

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Spin polarization
Graphite
Graphene
Magnetic moments
Density functional theory
Charge transfer
Magnetization
Electronic equipment
Atoms
Substrates

Keywords

  • CrO thin films
  • Spin electronics
  • Stoner criterion
  • graphene
  • proximity magnetization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Choudhary, R., Kumar, P., Manchanda, P., Sellmyer, D. J., Dowben, P. A., Kashyap, A., & Skomski, R. (2016). Interface-Induced Spin Polarization in Graphene on Chromia. IEEE Magnetics Letters, 7, [7407307]. https://doi.org/10.1109/LMAG.2016.2530628

Interface-Induced Spin Polarization in Graphene on Chromia. / Choudhary, Renu; Kumar, Pankaj; Manchanda, Priyanka; Sellmyer, David J.; Dowben, Peter A.; Kashyap, Arti; Skomski, Ralph.

In: IEEE Magnetics Letters, Vol. 7, 7407307, 01.01.2016.

Research output: Contribution to journalArticle

Choudhary, R, Kumar, P, Manchanda, P, Sellmyer, DJ, Dowben, PA, Kashyap, A & Skomski, R 2016, 'Interface-Induced Spin Polarization in Graphene on Chromia', IEEE Magnetics Letters, vol. 7, 7407307. https://doi.org/10.1109/LMAG.2016.2530628
Choudhary R, Kumar P, Manchanda P, Sellmyer DJ, Dowben PA, Kashyap A et al. Interface-Induced Spin Polarization in Graphene on Chromia. IEEE Magnetics Letters. 2016 Jan 1;7. 7407307. https://doi.org/10.1109/LMAG.2016.2530628
Choudhary, Renu ; Kumar, Pankaj ; Manchanda, Priyanka ; Sellmyer, David J. ; Dowben, Peter A. ; Kashyap, Arti ; Skomski, Ralph. / Interface-Induced Spin Polarization in Graphene on Chromia. In: IEEE Magnetics Letters. 2016 ; Vol. 7.
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