4.6 Article

Absence of a giant spin Hall effect in plasma-hydrogenated graphene

期刊

PHYSICAL REVIEW B
卷 99, 期 8, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.085401

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  1. Deutsche Forschungsgemeinschaft (DFG) [KO 3612/3-1, GRK 1570, SFB 689, SFB 1277]
  2. European Union [696656]

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The weak spin-orbit interaction in graphene was predicted to be increased, e.g., by hydrogenation. This should result in a sizable spin Hall effect (SHE). We employ two different methods to examine the spin Hall effect in weakly hydrogenated graphene. For hydrogenation we expose graphene to a hydrogen plasma and use Raman spectroscopy to characterize this method. We then investigate the SHE of hydrogenated graphene in the H-bar method and by direct measurements of the inverse SHE. Although a large nonlocal resistance can be observed in the H-bar structure, comparison with the results of the other method indicate that this nonlocal resistance has a non-spin-related origin.

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