Spin relaxation in organic spin valves
Abstract
We have observed the spin valve behavior in an organic nanowire consisting of three layers - cobalt, Alq3 and nickel - all of nominally 50 nm diameter. Based on the observed behavior, we conclude that the dominant spin relaxation mechanism in organics is the Elliott-Yafet mode associated with momentum relaxing scattering events. The dominance of this mode is the aftermath of low carrier mobility in organics. To our knowledge, this is the first demonstration of an organic 'nano-spintronic' device, as well as the first determination of the primary spin relaxation mechanism in organics.Keywords
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