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Giant magnetoresistance of nickel-contacted carbon nanotubes

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Article number042201
<mark>Journal publication date</mark>2007
<mark>Journal</mark>Journal of Physics: Condensed Matter
Issue number4
Number of pages7
Pages (from-to)-
<mark>Original language</mark>English


We present ab initio theoretical results for the giant magnetoresistance of single-wall carbon nanotubes (CNT) in contact with nickel electrodes. These show that Ni atoms located on the surface or axis of CNT contacts can induce a significant magnetic moment on the carbon atoms. For non-gated, undoped CNTs, this produces room-temperature GMR ratios of between 45% and 100% of the anti-aligned conductance.