Title |
Gate-Tunable Spin-Charge Conversion and the Role of Spin-Orbit Interaction in Graphene
|
---|---|
Published in |
Physical Review Letters, April 2016
|
DOI | 10.1103/physrevlett.116.166102 |
Pubmed ID | |
Authors |
S. Dushenko, H. Ago, K. Kawahara, T. Tsuda, S. Kuwabata, T. Takenobu, T. Shinjo, Y. Ando, M. Shiraishi |
Abstract |
The small spin-orbit interaction of carbon atoms in graphene promises a long spin diffusion length and the potential to create a spin field-effect transistor. However, for this reason, graphene was largely overlooked as a possible spin-charge conversion material. We report electric gate tuning of the spin-charge conversion voltage signal in single-layer graphene. Using spin pumping from an yttrium iron garnet ferrimagnetic insulator and ionic liquid top gate, we determined that the inverse spin Hall effect is the dominant spin-charge conversion mechanism in single-layer graphene. From the gate dependence of the electromotive force we showed the dominance of the intrinsic over Rashba spin-orbit interaction, a long-standing question in graphene research. |
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Mendeley readers
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Other | 15 | 10% |
Unknown | 25 | 17% |
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Other | 0 | 0% |
Unknown | 29 | 20% |