Correlation of microstructure and transport properties in multi-layered graphene spin valves on SiO2/Si

Leonardo Lari, G. Hughes, K Muramoto, Atsufumi Hirohata, Masashi Shiraishi, Vlado Lazarov

Research output: Contribution to conferencePaperpeer-review


Multi-layered graphene based spin valves were deposited on SiO2/Si substrates and the Co ferromagnetic and non-magnetic electrodes were patterned using electron-beam lithography. Aberration-corrected (scanning) transmission electron microscopy imaging and energy dispersive X-ray spectroscopy were employed to study the interfacial structure of the device components from thin cross-sectional lamellae obtained by focused ion beam microscopy. The robustness of the spin injection with a constant spin polarization under positive and negative bias voltage was attributed to the interface smoothness which leads to suppression of spin scattering at the interface between the ferromagnet and the multi-layered graphene.
Original languageEnglish
Number of pages4
Publication statusPublished - 2013

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