| Author(s): |
Hyuk-Jae Jang; Kurt Pernstich; David J. Gundlach; Oana Jurchescu; Curt A. Richter; |
| Title: |
Observation of spin-valve effect in Alq3 using a low work function metal |
| Published: |
September 07, 2012 |
| Abstract: |
We present the observation of magnetoresistance in Co/Ca/Alq3/Ca/NiFe spin-valve devices. Thin Ca layers contacting 150 nm thick Alq3 enable the injection of spin-polarized electrons into Alq3 due to engineering of the band alignment. The devices exhibit symmetric current-voltage (I-V) characteristics indicating identical metal contacts on Alq3 and up to 4% of positive magnetoresistance was observed at 4.5K. In contrast, simultaneously fabricated Co/Alq3/NiFe devices displayed asymmetric I-V curves due to the different metal electrodes, and spin-valve effects were not observed above noise level. |
| Citation: |
Applied Physics Letters |
| Volume: |
101 |
| Pages: |
pp. 102412 - 102412-5 |
| Research Areas: |
Electronics, Semiconductor Materials, Spintronics, Device Design and Characterization |
