Abstract
We report on single-crystal rubrene field-effect transistors (FETs) with ferromagnetic Co electrodes, tunnel-coupled to the conduction channel via an Al2O3 tunnel barrier. Magnetic and electronic characterization shows that the Al2O3 film not only protects the Co from undesired oxidation, but also provides a highly controlled tunnel barrier for overcoming the conductivity mismatch problem when injecting spins from a ferromagnetic metal into a semiconductor. Our FETs provide a significant step towards the realization of a device that integrates FET and spin-valve functionality, one of the major goals of spintronics.
| Original language | English |
|---|---|
| Pages (from-to) | 743-747 |
| Number of pages | 5 |
| Journal | Organic electronics |
| Volume | 11 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 22 Jan 2010 |
Keywords
- Spintronics
- Organic single-crystal
- Ferromagnetic electrodes
- Field-effect transistor
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