Electrical detection of spin precession in single layer graphene spin valves with transparent contacts
By Wei Han, K. Pi, Wenzhong Bao, K. McCreary, Yan Li, Wei-Hua Wang, C. N. Lau, Roland K. Kawakami. 2009
155 citations recorded by the source corpus.
Spin accumulation and spin precession in single layer graphene are studied by nonlocal spin valve measurements at room temperature. The dependence of the nonlocal magnetoresistance on electrode spacing is investigated and the results indicate a spin diffusion length of ∼1.6 μm and a spin injection/detection efficiency of 0.013. Electrical detection of the spin precession confirms that the nonlocal signal originates from spin injection and transport. Fitting of the Hanle spin precession data yields a spin relaxation time of ∼84 ps and a spin diffusion length of ∼1.5 μm, which is consistent with the value obtained through the spacing dependence.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/482ed42993c892e8de3f6cd10156eab8403592ee
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
Citations in the corpus
- The role of contact resistance in graphene field-effect devices (2017, background): “magnetic electrode [217] or through a non-magnetic metallic layer [207]; (ii) pinhole contacts, in which the magnetic materials contact the graphene layer through holes in an insulating barrier, such as Al2O3 [218]; (iii) tunneling contacts, where a thin insulating barrier exists in between the grap”