Bundesmann, Jan and Liu, Ming-Hao and Adagideli, Inanc and Richter, Klaus (2013) Spin conductance of diffusive graphene nanoribbons: A probe of zigzag edge magnetization. PHYSICAL REVIEW B, 88 (19): 195406. ISSN 1098-0121, 1550-235X
Full text not available from this repository.Abstract
We investigate spin transport in diffusive graphene nanoribbons with both clean and rough zigzag edges, and long-range potential fluctuations. The long-range fields along the ribbon edges cause the local doping to come close to the charge neutrality point forming p-n junctions with localized magnetic moments, similar to the predicted magnetic edge of clean zigzag graphene nanoribbons. The resulting random edge magnetization polarizes charge currents and causes sample-to-sample fluctuations of the spin currents obeying universal predictions. We show furthermore that, although the average spin conductance vanishes, an applied transverse in-plane electric field can generate a finite spin conductance. A similar effect can also be achieved by aligning the edge magnetic moments through an external magnetic field.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSPORT; STATE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Mar 2020 11:09 |
| Last Modified: | 25 Mar 2020 11:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15678 |
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