C 60 –Co nano-composites, in which Co nano-particles are embedded in C 60 molecules, have been fabricated and a magnetoresistance (MR) ratio of 8% has been observed at T = 4.2 K. In addition, we have succeeded in observing a clear MR curve even at room temperature (RT). The MR effect is ascribed to magnetization of the Co nano-particles and spin-dependent transport in C 60 molecules. This study directly indicates that RT operation of molecular spin devices can be realized.
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Miwa et al. (2006) studied this question.
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