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Theoretical prediction of perfect spin filtering at interfaces between close-packed surfaces of Ni or Co and graphite or graphene

Autor: Karpan, V. M., Khomyakov, P. A., Starikov, A. A., Giovannetti, G., Zwierzycki, M., Talanana, M., Brocks, G., Brink, J. van den, Kelly, P. J.

Publikováno v: Phys. Rev. B 78, 195419 (2008)

The in-plane lattice constants of close-packed planes of fcc and hcp Ni and Co match that of graphite almost perfectly so that they share a common two dimensional reciprocal space. Their electronic structures are such that they overlap in this recipr

Externí odkaz: http://arxiv.org/abs/0809.5168

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Graphite and graphene as perfect spin filters

Autor: Karpan, V. M., Giovannetti, G., Khomyakov, P. A., Talanana, M., Starikov, A. A., Zwierzycki, M., Brink, J. van den, Brocks, G., Kelly, P. J.

Publikováno v: Phys Rev Lett 99, 176602 (2007)

Based upon the observations (i) that their in-plane lattice constants match almost perfectly and (ii) that their electronic structures overlap in reciprocal space for one spin direction only, we predict perfect spin filtering for interfaces between g

Externí odkaz: http://arxiv.org/abs/0708.1735

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Orientation-Dependent Transparency of Metallic Interfaces

Autor: Xu, P. X., Xia, K., Zwierzycki, M., Talanana, M., Kelly, P. J.

Publikováno v: Phys. Rev. Lett. 96, 176602 (2006)

As devices are reduced in size, interfaces start to dominate electrical transport making it essential to be able to describe reliably how they transmit and reflect electrons. For a number of nearly perfectly lattice-matched materials, we calculate fr

Externí odkaz: http://arxiv.org/abs/cond-mat/0601367

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First-principles scattering matrices for spin-transport

Autor: Xia, K., Zwierzycki, M., Talanana, M., Kelly, P. J., Bauer, G. E. W.

Publikováno v: Phys. Rev. B 73, 064420 (2006)

Details are presented of an efficient formalism for calculating transmission and reflection matrices from first principles in layered materials. Within the framework of spin density functional theory and using tight-binding muffin-tin orbitals, scatt

Externí odkaz: http://arxiv.org/abs/cond-mat/0508373

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