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Spin Currents in Rough Graphene Nanoribbons: Universal Fluctuations and Spin Injection

Wimmer, Michael, Adagideli, İnanç, Berber, Savaş, Tománek, David and Richter, Klaus (2008) Spin Currents in Rough Graphene Nanoribbons: Universal Fluctuations and Spin Injection. Physical Review Letters (PRL) 100 (17), pp. 177207-1.

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Date of publication of this fulltext: 05 Aug 2009 13:40

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Other URL: http://link.aps.org/doi/10.1103/PhysRevLett.100.177207


Abstract

We investigate spin conductance in zigzag graphene nanoribbons and propose a spin injection method based only on graphene. Combining density functional theory with tight-binding transport calculations, we find that nanoribbons with asymmetrically shaped edges show a non-zero spin conductance and can be used for spin injection. Furthermore, nanoribbons with rough edges exhibit mesoscopic spin conductance fluctuations with a universal value of $rms G_s = 0.4 e/4\\pi$.


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Item type:Article
Date:2 May 2008
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Projects:SFB 689: Spinphänomene in reduzierten Dimensionen, GRK 638 Nonlinearity and nonequilibrium in condensed matter
Identification Number:
ValueType
10.1103/PhysRevLett.100.177207DOI
0709.3244arXiv ID
Related URLs:
URLURL Type
http://arxiv.org/abs/0709.3244Preprint
Classification:
NotationType
85.75.-dPACS
72.25.-bPACS
73.22.-fPACS
73.63.-bPACS
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:2577
Owner only: item control page

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