Organic spin-valves based on fullerene C60

ORAL

Abstract

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 C60 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.

*This work was supported by Army MURI Grant No. W911NF-08-1-0317 and NSF Grant No. ECS 07-25280.

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Authors

  • Ran Lin

    • University of Iowa

  • Fujian Wang

    • University of Iowa

  • Markus Wohlgenannt

    • University of Iowa

  • Chunyong He

    • University of California at Berkeley

  • Xiaofang Zhai

    • University of California at Berkeley

  • Yuri Suzuki

    • University of California at Berkeley