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Electrical Spin Injection in Multi-Wall carbon NanoTubes with transparent ferromagnetic contacts

S. Sahoo·T. Kontos·C. Schönenberger·C. Sürgers
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Abstract

We report on electrical spin injection measurements on MWNTs . We use a ferromagnetic alloy Pd$_{1-x}$Ni$_{x}$ with x $\approx$ 0.7 which allows to obtain devices with resistances as low as 5.6 $kΩ$ at 300 $K$. The yield of device resistances below 100 $kΩ$, at 300 $K$, is around 50%. We measure at 2 $K$ a hysteretic magneto-resistance due to the magnetization reversal of the ferromagnetic leads. The relative difference between the resistance in the antiparallel (AP) orientation and the parallel (P) orientation is about 2%.

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S. Sahoo, T. Kontos, C. Schönenberger, C. Sürgers. 2004-12-16. Electrical Spin Injection in Multi-Wall carbon NanoTubes with transparent ferromagnetic contacts. https://doi.org/10.1063/1.1882761

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