Journal
SYNTHETIC METALS
Volume 161, Issue 7-8, Pages 553-557Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2010.11.012
Keywords
Spintronics; Organic semiconductors; Hyperfine coupling; Fullerene
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Recent work suggests that the spin-transport length in organic semiconductors is limited by hyperfine coupling. Therefore, to potentially overcome this limitation, we fabricated spin-valves based on C-60 for which the hyperfine coupling is minute. However, our devices do not show a significantly larger spin-diffusion length. This suggests that either a mechanism other than hyperfine coupling causes the loss of spin-polarization, or that in thick devices an increasing conductivity mismatch limits spin-injection. (C) 2010 Elsevier B.V. All rights reserved.
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