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Highly efficient spin transport in epitaxial graphene on SiC

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Authors:  Bruno Dlubak, Marie-Blandine Martin, Cyrile Deranlot, Bernard Servet, Stéphane Xavier, Richard Mattana, Mike Sprinkle, Claire Berger, Walt A. De Heer, Frédéric Petroff, Abdelmadjid Anane, Pierre Seneor, Albert Fert

Spin information processing is a possible new paradigm for post-CMOS (complementary metal-oxide semiconductor) electronics and efficient spin propagation over long distances is fundamental to this vision. However, despite several decades of intense research, a suitable platform is still wanting. We report here on highly efficient spin transport in two-terminal polarizer/analyser devices based on high-mobility epitaxial graphene grown on silicon carbide. Taking advantage of high-impedance injecting/detecting tunnel junctions, we show spin transport efficiencies up to 75%, spin signals in the mega-ohm range and spin diffusion lengths exceeding 100 {\mu}m. This enables spintronics in complex structures: devices and network architectures relying on spin information processing, well beyond present spintronics applications, can now be foreseen.

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  • Workflow Status:Published
  • Created By:Gina Adams
  • Created:11/15/2013
  • Modified By:Fletcher Moore
  • Modified:10/07/2016

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