Regensburg 2007 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 27: Symposium “Graphene”

TT 27.3: Vortrag

Donnerstag, 29. März 2007, 14:55–15:20, H20

Designing pencil traces for spintronics (SWITCHED WITH HL 49.1) — •Inanc Adagideli, Michael Wimmer, Savas Berber, Klaus Richter, and David Tomanek — Universität Regensburg, 93040 Regensburg, Germany

Monolayers of graphite have attracted much theoretical and experimental attention recently, owing to their nearly massless charge carriers and the internal spin-like degrees of freedom. We explore the use of conventional spin and spin-like degrees of freedom for spintronics in undoped and doped systems related to graphene. To this end we consider mono- and bi-layer strips consisting of sp² bonded carbon or BN and identify their electronic and spin-like degrees of freedom, corresponding to sublattice and valley degeneracy structure, using ab initio calculations. Based on quantum transport calculations, we determine how spin polarized currents could be generated, manipulated, and detected.

D.T. acknowledges financial support by NSF NIRT grant ECS-0506309, the NSF NSEC grant EEC-425826, and the Humboldt Foundation. I.A., M.W., S.B. and K.R. acknowledge financial support by DFG (SFB 689 and GRK 638)