Proximity effect and multiple Andreev reflections in few-layer graphene
@article{Shailos2007ProximityEA, title={Proximity effect and multiple Andreev reflections in few-layer graphene}, author={A. Shailos and W. Nativel and A. Kasumov and C. Collet and M. Ferrier and S. Gu{\'e}ron and R. Deblock and H.Bouchiat}, journal={EPL}, year={2007}, volume={79}, pages={57008} }
We have investigated electronic transport of few-layer graphene (FLG) connected to superconducting electrodes. The device is prepared by mechanical exfoliation of graphite. A small mesa of FLG is connected to two tungsten electrodes, separated by 2.5 μm, grown by focused ion beam. Whereas the tungsten electrodes are superconducting below 4 K, the proximity effect in FLG develops below 1 K, and is characterized by a factor 2 differential resistance drop at low bias. We find multiple Andreev… CONTINUE READING
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