CUED Publications database

Long Spin Diffusion Length in Few-Layer Graphene Flakes.

Yan, W and Phillips, LC and Barbone, M and Hämäläinen, SJ and Lombardo, A and Ghidini, M and Moya, X and Maccherozzi, F and van Dijken, S and Dhesi, SS and Ferrari, AC and Mathur, ND (2016) Long Spin Diffusion Length in Few-Layer Graphene Flakes. Phys Rev Lett, 117. 147201-.

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We report a spin valve with a few-layer graphene flake bridging highly spin-polarized La_{0.67}Sr_{0.33}MnO_{3} electrodes, whose surfaces are kept clean during lithographic definition. Sharp magnetic switching is verified using photoemission electron microscopy with x-ray magnetic circular dichroism contrast. A naturally occurring high interfacial resistance ∼12 MΩ facilitates spin injection, and a large resistive switching (0.8 MΩ at 10 K) implies a 70-130 μm spin diffusion length that exceeds previous values obtained with sharp-switching electrodes.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:53
Last Modified: 19 Jul 2018 06:25