Spin injection and perpendicular spin transport in graphite nanostructures


Banerjee, Tamalika and Wiel, Wilfred G. van der and Jansen, Ron (2010) Spin injection and perpendicular spin transport in graphite nanostructures. Physical Review B: Condensed matter and materials physics, 81 . p. 2144091. ISSN 1098-0121

[img] PDF
Restricted to UT campus only
: Request a copy
Abstract:Organic- and carbon-based materials are attractive for spintronics because their small spin-orbit coupling and low hyperfine interaction is expected to give rise to large spin-relaxation times. However, the corresponding spin-relaxation length is not necessarily large when transport is via weakly interacting molecular orbitals. Here we use graphite as a model system and study spin transport in the direction perpendicular to the weakly bonded graphene sheets. We achieve injection of highly 75% spin-polarized electrons into graphite nanostructures of 300–500 nm across and up to 17 nm thick, and observe transport without any measurable loss of spin information. Direct visualization of local spin transport in graphite-based spin-valve sandwiches also shows spatially uniform and near-unity transmission for electrons at 1.8 eV above the Fermi level.
Item Type:Article
Copyright:© 2010 American Physical Society
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/75633
Official URL:https://doi.org/10.1103/PhysRevB.81.214409
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page