Journal
NATURE MATERIALS
Volume 11, Issue 5, Pages 409-416Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT3305
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Funding
- US Army Research Office (ARO) [MURI W911NF-08-1-0364]
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The two-dimensional electron systems in graphene and in topological insulators are described by massless Dirac equations. Although the two systems have similar Hamiltonians, they are polar opposites in terms of spin-orbit coupling strength. We briefly review the status of efforts to achieve long spin-relaxation times in graphene with its weak spin-orbit coupling, and to achieve large current-induced spin polarizations in topological-insulator surface states that have strong spin-orbit coupling. We also comment on differences between the magnetic responses and dilute-moment coupling properties of the two systems, and on the pseudospin analogue of giant magnetoresistance in bilayer graphene.
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