Magnetic clusters on single-walled carbon nanotubes: The kondo effect in a one-dimensional host

Teri W Odom, J. L. Huang, C. L. Cheung, C. M. Lieber

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Abstract

Single-walled carbon nanotubes are ideal systems for investigating fundamental properties and applications of one-dimensional electronic systems. The interaction of magnetic impurities with electrons confined in one dimension has been studied by spatially resolving the local electronic density of states of small cobalt clusters on metallic single-walled nanotubes with a low-temperature scanning tunneling microscope. Spectroscopic measurements performed on and near these dusters exhibit a narrow peak near the Fermi level that has been identified as a Kondo resonance. Using the scanning tunneling microscope to fabricate ultrasmall magnetic nanostructures consisting of small cobalt clusters on short nanotube pieces, spectroscopic studies of this quantum box structure exhibited features characteristic of the bulk Kondo resonance, but also new features due to finite size.

Original languageEnglish
Pages (from-to)1549-1552
Number of pages4
JournalScience
Volume290
Issue number5496
Publication statusPublished - Nov 24 2000

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Cite this

Odom, T. W., Huang, J. L., Cheung, C. L., & Lieber, C. M. (2000). Magnetic clusters on single-walled carbon nanotubes: The kondo effect in a one-dimensional host. Science, 290(5496), 1549-1552.