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Huge Ballistic Magnetoresistance in Multiple Nanocontacts Devices

N. Garcia·M. R. Ibarra·C. Hao1·R. F. Pacheco·D. Serrate
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Abstract

In this paper we report an exhaustive experimental work on magnetoresistance effects found in a system in which a large number of nanocontacts are produced between oxidized Fe fine particles. We have obtained the following performances: i) Huge low field room temperature magnetoresistance (over 1000%). ii) Non-linear I-V at different applied fields and temperatures. iii) Large thermal stability and reproducible resistance value under thermal cycles from room temperature down to 5 K. iv) Easy to fabricate with an almost 100% success. v) Heavy duty and transportable samples with reproducibility tested in several laboratories. We realized that the extraordinary effect found is related to the oxygen content at the particles surface

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N. Garcia, M. R. Ibarra, C. Hao1, R. F. Pacheco, D. Serrate. 2005-02-02. Huge Ballistic Magnetoresistance in Multiple Nanocontacts Devices. https://arxiv.org/abs/cond-mat/0502046

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