Electronic bisection of a single-wall carbon nanotube by controlled chemisorption

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Conversion of two diametrically opposed atomic rows on a carbon nanotube to sp3 hybridization produces two identical weakly coupled one-dimensional electronic systems within a single robust covalently bonded package: a biribbon. Arm-chair tubes, when so divided, acquire a pair of narrow spin-polarized bands at the Fermi energy; interaction across the sp3 dividers produces a tunable band splitting in the THz range. For semiconducting tubes, the eigenvalues of the low-energy electronic states are surprisingly unaffected by the bifurcation; however, the tubes' response functions to external electric fields are dramatically altered. These modified tubes could be produced by uniaxial compression transverse to the tube axis followed by site-selective chemisorption.

Original languageEnglish (US)
Article number026802
JournalPhysical review letters
Issue number2
StatePublished - Jul 13 2007

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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