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Rashba spin-orbit interaction in graphene armchair nanoribbons

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Abstract

We study graphene nanoribbons (GNRs) with armchair edges in the presence of Rashba spin- orbit interactions (RSOI). We impose the boundary conditions on the tight binding Hamiltonians for bulk graphene with RSOI by means of a sine transform and study the influence of RSOI on the spectra and the spin polarization in detail. We derive the low energy approximation of the RSOI Hamiltonian for the zeroth and first order in momentum and test their ranges of validity. The choice of a basis appropriate for armchair boundaries is important in the case of mode-coupling effects and leads to results that are easy to work with.

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Authors and Affiliations

  1. Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität, 79104, Freiburg, Germany

    Lucia Lenz, Daniel F. Urban & Dario Bercioux

  2. Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstraße 11, 79108, Freiburg, Germany

    Daniel F. Urban

  3. Dahlem Center for Complex Quantum Systems and Institut für Theoretische Physik, Arnimalllee 14, 14195, Berlin, Germany

    Dario Bercioux

Authors
  1. Lucia Lenz
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  2. Daniel F. Urban
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  3. Dario Bercioux
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Correspondence to Lucia Lenz.

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Lenz, L., Urban, D.F. & Bercioux, D. Rashba spin-orbit interaction in graphene armchair nanoribbons. Eur. Phys. J. B 86, 502 (2013). https://doi.org/10.1140/epjb/e2013-40760-4

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  • DOI: https://doi.org/10.1140/epjb/e2013-40760-4

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