Tunable Magnetic Proximity Effects in Graphene Junctions

ORAL

Abstract

The characteristic length of the magnetic proximity effects exceed the thickness of a graphene layer leading to an important, but typically overlooked, modifications of equilibrium and transport properties, as well as the implications for graphene spintronics [1,2]. Using the first-principles studies that integrate a real space density functional theory (GPAW) [3] with the state-of-the art boundary elements electrostatic code based on the Robin Hood method [4], we explore tunable electronic structure and magnetic proximity effects in the ferromagnet/insulator/graphene junctions. We show that the inclusion of a finite-size gate electrodes and van der Walls interaction lead to nontrivial effects that could also be important in other two-dimensional materials beyond graphene.\\[4pt] [1] P. Lazic et al., Phys. Rev. B 89 085429 (2014).\\[0pt] [2] W. Han et al., Nature Nanotech. 9, 794 (2014).\\[0pt] [3] J. Enkovaara et al., J. Phys. Cond. Matter 22, 253202 (2010).\\[0pt] [4] P. Lazic et al., J. Comp. Phys. 213, 117 (2006).

*Work supported by US ONR, NSF-DMR and Nebraska NSF MRSEC.

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Authors

  • Predrag Lazic

    • Department of Physics, University at Buffalo, State University of New York, Buffalo, New York 14260, USA
    • Theoretical Physics Division, Rudjer Boskovic Institute

  • Kirill Belashchenko

    • Department of Physics and Astronomy University of Nebraska-Lincoln, Lincoln, NE 68588-0299, USA
    • Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
    • Department of Physics and Astronomy, University of Nebraska-Lincoln
    • University of Nebraska - Lincoln

  • Igor Zutic

    • University at Buffalo
    • Department of Physics, University at Buffalo, State University of New York, Buffalo, New York 14260, USA
    • University at Buffalo, The State University of New York
    • Department of Physics, University at Buffalo, SUNY, Buffalo, NY 14260, USA
    • SUNY Buffalo
    • State University of New York at Buffalo
    • University at Buffalo-SUNY
    • University at Buffalo - SUNY