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arXiv 1006.4841cond-mat.mes-hall
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ESR evidence for disordered magnetic phase from ultra-small carbon nanotubes embedded in zeolite nanochannels

S. S. Rao, A. Stesmans, J. V. Noyen, P. Jacobs, B. Sels

英文摘要:

A multi-frequency electron spin resonance (ESR) study provides evidence for the occurrence of low temperature ferromagnetic/spin-glass behavior in aligned arrays of sub-nanometer single walled carbon nanotubes confined in zeolite nano-channels, owing to sp2-type non-bonding carbon associated localized states with density of ~3 x 1019 /g. Features related to the much anticipated conduction ESR are not detected. In the paramagnetic phase, the ESR linewidth is found to be weakly dependent on microwave frequency.

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