Suppression of the anti-symmetry channel in the conductance of telescoped double-wall nanotubes

Abstract

The conductance of telescoped double-wall nanotubes (TDWNTs) composed of two armchair nanotubes ($(n_O,n_O)$ and $(n_O-5,n_O-5)$ with $n_O\ge 10$) is calculated using the Landauer formula and a tight binding model. The results are in good agreement with the conductance calculated analytical by replacing each single-wall nanotube with a ladder, as expressed by $(2e^2/h)(T_{+}+T_{-})$, where $T_{+}$ and $T_{-}$ are the transmission rates of the symmetry and anti-symmetry channels, respectively. Perfect transmission in both channels is possible in this TDWNT when $n_O=10$, while $T_{-}$ is considerably small in the other TDWNTs. $T_{-}$ is particularly low when either $n_O$ or $n_O-5$ is a multiple of three. In this case, a three body effect of covalent-like interlayer bonds plays a crucial role in determining the finite $T_{-}$. When $n_O$ is a multiple of five, the five-fold symmetry increases $T_{-}$, although this effect diminishes with increasing $n_O$.

Owing to errors of the calculation code, the numerical data shown in Figures are incorrect. Nonetheless, the corrected numerical calculations do not change the essential results. See erratum, PHYSICAL REVIEW B 79, 199902 (2009). The responsibility for the errors lies completely with the first author (Ryo Tamura)

References in corpus (4)

• Electronic states and quantum transport in double-wall carbon nanotubes
• Quantum Interference Effects in Electronic Transport through Nanotube Contacts
• Backward diode composed of a metallic and semiconducting nanotube
• Resonant spin current in nanotube double junctions

Cited by in corpus (6)

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• Effects of Disorder and Momentum Relaxation on the Intertube Transport of Incommensurate Carbon Nanotube Ropes and Multiwall Nanotubes
• Electronic inter-tube transfer in double-wall carbon nanotubes with impurities
• Conductance of telescoped double-walled nanotubes from perturbation calculations
• Perturbation calculations on interlayer transmission rates from symmetric to antisymmetric channels in parallel armchair nanotube junctions
• Relation between dispersion lines and conductance of telescoped armchair double-wall nanotubes analyzed using perturbation formulas and first-principles calculations