Thursday, October 11, 2012

1210.2865 (Lucia Lenz et al.)

Rashba spin-orbit interaction in graphene armchair nanoribbons    [PDF]

Lucia Lenz, Daniel Urban, Dario Bercioux
We study graphene nanoribbons (GNRs) with armchair edges in the presence of Rashba spin-orbit interaction (RSOI). We impose the boundary conditions on the tight binding Hamiltonians for bulk graphene with RSOI by means of a sine transform and use the results to derive different approximations and to investigate their ranges of validity. Finally, we derive an approximation for the lowest two energy bands, which is valid for experimentally available sizes of RSOI. In addition we study the spin polarization in GNRs resulting from the RSOI.
View original: http://arxiv.org/abs/1210.2865

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