Long Spin Diffusion Length in Few-Layer Graphene Flakes.
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Yan, W
Phillips, LC
Barbone, M
Hämäläinen, SJ
Lombardo, Antonio https://orcid.org/0000-0003-3088-6458
Abstract
We report a spin valve with a few-layer graphene flake bridging highly spin-polarized La_{0.67}Sr_{0.33}MnO_{3} electrodes, whose surfaces are kept clean during lithographic definition. Sharp magnetic switching is verified using photoemission electron microscopy with x-ray magnetic circular dichroism contrast. A naturally occurring high interfacial resistance ∼12 MΩ facilitates spin injection, and a large resistive switching (0.8 MΩ at 10 K) implies a 70-130 μm spin diffusion length that exceeds previous values obtained with sharp-switching electrodes.
Description
Keywords
0299 Other Physical Sciences
Journal Title
Phys Rev Lett
Conference Name
Journal ISSN
0031-9007
1079-7114
1079-7114
Volume Title
Publisher
American Physical Society (APS)
Publisher DOI
Sponsorship
The Royal Society (uf120210)
Engineering and Physical Sciences Research Council (EP/K01711X/1)
Engineering and Physical Sciences Research Council (EP/K017144/1)
Engineering and Physical Sciences Research Council (EP/M507799/1)
European Commission (604391)
Engineering and Physical Sciences Research Council (EP/L016087/1)
European Commission Horizon 2020 (H2020) Future and Emerging Technologies (FET) (696656)
Engineering and Physical Sciences Research Council (EP/K01711X/1)
Engineering and Physical Sciences Research Council (EP/K017144/1)
Engineering and Physical Sciences Research Council (EP/M507799/1)
European Commission (604391)
Engineering and Physical Sciences Research Council (EP/L016087/1)
European Commission Horizon 2020 (H2020) Future and Emerging Technologies (FET) (696656)
Leverhulme Trust (Grant ID: F/09 154/E), Schlumberger Cambridge (International Scholarship), Engineering and Physical Sciences Research Council (DTA award), Royal Society, EU Graphene Flagship (no. 604391), European Research Council (Grant Hetero2D), Engineering and Physical Sciences Research Council (Grant IDs: EP/K01711X/1, EP/K017144/1, EP/N010345/1, EP/M507799/1, EP/L016087/1), Wolfson College.