T. Lan Anh Tran, T. Quyen Le, Johnny G. M. Sanderink, Wilfred G. van der Wiel and Michel P. de Jong The Multistep Tunneling Analogue of Conductivity Mismatch in Organic Spin Valves Advanced Functional Materials 22
Organic spin valves show many promising features but remain poorly understood. An experimental study of C60-based spin valves is presented and their behavior is modeled with spin-polarized tunneling via multiple intermediate states. Analogous to the conductivity mismatch in the diffusive regime, the magnetoresistance decreases with the number of intermediate tunnel steps, regardless of the value of the spin lifetime.
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