Strong localization in defective carbon nanotubes: a recursive Greenʼs function study

@article{Teichert2014StrongLI,
  title={Strong localization in defective carbon nanotubes: a recursive Greenʼs function study},
  author={Fabian Teichert and Andreas Zienert and J{\"o}rg Schuster and Michael Schreiber},
  journal={New Journal of Physics},
  year={2014},
  volume={16}
}
We study the transport properties of defective single-walled armchair carbon nanotubes (CNTs) on a mesoscopic length scale. Monovacancies and divancancies are positioned randomly along the CNT. The calculations are based on a fast, linearly scaling recursive Greenʼs function formalism that allows us to treat large systems quantum-mechanically. The electronic structure of the CNT is described by a density-functional-based tight-binding model. We determine the influence of the defects on the… 

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References

SHOWING 1-10 OF 52 REFERENCES

Anderson localization regime in carbon nanotubes: size dependent properties

The influence of disorder and defects is of fundamental relevance in the performance of nanotube-based devices. It is then crucial to understand the properties of (as-grown or in situ created)

Tuning the conductance of single-walled carbon nanotubes by ion irradiation in the Anderson localization regime

TLDR
In this work, consecutive Ar+ irradiation doses are applied to single-walled nanotubes (SWNTs) producing a uniform density of defects producing an exponential dependence of R(L) indicating that the system is within the strong Anderson localization regime.

Anderson localization in carbon nanotubes: defect density and temperature effects.

TLDR
It is shown that low temperatures, about 15-65 K, are enough to smooth out the fluctuations of the conductance without destroying the exponential dependence of the resistivity as a function of the tube length.

Ab initio study of transport properties in defected carbon nanotubes: an O(N) approach

A combination of ab initio simulations and linear-scaling Green’s functions techniques is used to analyze the transport properties of long (up to 1 µm) carbon nanotubes with realistic disorder. The

Conductance of carbon nanotubes with disorder: A numerical study

We study the conductance of carbon nanotube wires in the presence of disorder, in the limit of phase-coherent transport. For this purpose, we have developed a simple numerical procedure to compute

Charge transport in disordered graphene-based low dimensional materials

Two-dimensional graphene, carbon nanotubes, and graphene nanoribbons represent a novel class of low dimensional materials that could serve as building blocks for future carbon-based nanoelectronics.

Electrical conductivity of individual carbon nanotubes

THE interest in carbon nanotubes has been greatly stimulated by theoretical predictions that their electronic properties are strongly modulated by small structural variations1–8. In particular, the

Transport Properties of Carbon Nanotubes: Effects of Vacancy Clusters and Disorder

We investigate the effects of vacancy defects on the electronic and transport properties of carbon nanotubes through density functional calculations. In both cases, where vacancies aggregate into

Carbon nanotubes as long ballistic conductors

Early theoretical work on single-walled carbon nanotubes predicted that a special achiral subset of these structures known as armchair nanotubes should be metallic. Tans et al. have recently
...