Electronic and electromagnetic properties of nanotubes

Slepyan, G. Ya.; Maksimenko, S. A.; Lakhtakia, Akhlesh; Yevtushenko, O. M.; Гусаков, А.В.

doi:10.1103/physrevb.57.9485

Cited by 107 publications

(77 citation statements)

References 34 publications

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“…An alternative simplified TB approach was originally proposed by Romanov and Kibis [28] and developed further in [29,30]. Within this semiclassical approach, which, in what follows, we will refer to as the Slepyan et al approach, the lowest conduction band energy spectrum is calculated using the so-called spiral model: a phenomenological analytical method based on Wannier formulation for the Schrödinger equation in a curvilinear coordinate system for a nanotube, modelled by a chain of atoms wrapped helically around a cylinder, thereby accounting for the helicoidal symmetry.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear coherent magneto-optical response of a single chiral carbon nanotube

Slavcheva

Roussignol

2010

New J. Phys.

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View the article online for updates and enhancements. Abstract. We propose a theoretical framework and dynamical model for the description of the natural optical activity and Faraday rotation in an individual chiral single-wall carbon nanotube (CNT) in the highly nonlinear coherent regime. The model is based on a discrete-level representation of the optically active states near the band edge. Chirality is modelled by a system Hamiltonian in a four-level basis corresponding to energy-level configurations, specific for each handedness, that are mirror reflections of each other. The axial magnetic field is introduced through the Aharonov-Bohm and Zeeman energylevel shifts. The time evolution of the quantum system, describing a single nanotube with defined chirality, under an ultrashort polarized pulse excitation is studied using the coupled coherent vector Maxwell-pseudospin equations (Slavcheva 2008 Phys. Rev. B 77 115347). We provide an estimate for the effective dielectric constant and the optical dipole matrix element for transitions excited by circularly polarized light in a single nanotube and calculate the magnitude of the circular dichroism and the specific rotatory power in the absence and in the presence of an axial magnetic field. Giant natural gyrotropy (polarization rotatory power ∼3000 • mm −1 (B = 0 T)), superior to that of the crystal birefringent materials, liquid crystals and comparable or exceeding that of the artificially made helical photonic structures, is numerically demonstrated for the specific case of a (5, 4) nanotube. A quantitative estimate of the coherent nonlinear magneto-chiral optical effect in an axial magnetic field is given 3 Authors to whom any correspondence should be addressed. . The model provides a framework for the investigation of the chirality and magnetic field dependence of the ultrafast nonlinear optical response of a single CNT.

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Section: Introductionmentioning

confidence: 99%

Nonlinear coherent magneto-optical response of a single chiral carbon nanotube

Slavcheva

Roussignol

2010

New J. Phys.

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“…The azimuthal current of the CNT is very weak compared to the axial component and therefore is ignored in the boundary conditions above. The axial conductivity for armchair CNT is given by [5,6] …”

Section: The Effective-boundary Conditionmentioning

confidence: 99%

“…Here, we provide a theoretical description of the electromagnetic scattering by multi -wall carbon nanotubes based on an effectiveboundary condition derived previously using a phenomenological quantum model [5,6]. The analytical solution for the scattering problem developed by the authors in [8] was compared with experiments and good results had been obtained.…”

Section: Introductionmentioning

confidence: 99%

“…The analytical solution for the scattering problem developed by the authors in [8] was compared with experiments and good results had been obtained. The fundamental assumption invoked in the present paper is that the inter-layer tube interaction leads to no significant changes in the quantum model derived in [5] and [6] for single-wall CNTs. In this case, the quantum model can be applied to describe the boundary condition on each wall independently.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Scattering by Multi-Wall Carbon Nanotubes

Mikki¹,

Kishk²

2009

PIER B

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“…Slepyan et al [2,3] introduced the earliest study of electromagnetic wave interaction with CNT. Their study included the dc and ac conductivity of single wall CNTs and surface wave and leaky wave propagation along these nanotubes.…”

Section: Introductionmentioning

confidence: 99%

Lower Frequency Limit of Carbon Nanotube Antenna

Attiya

2009

PIER

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Abstract-Carbon nanotubes are characterized by slow wave propagation and high characteristic impedance due to the additional kinetic inductive effect. This slow wave property can be used to introduce resonant dipole antennas with dimensions much smaller than traditional half-wavelength dipole in Terahertz band. However, this property has less effect at lower frequency bands. This paper introduces the physical interpretation of this property based on the relation between the resonance frequency and the surface wave propagation constant on a carbon nanotube. This surface wave propagation is found to be characterized by high attenuation coefficient at low frequency bands which limits using carbon nanotube as an antenna structure at these frequencies.

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Electronic and electromagnetic properties of nanotubes

Cited by 107 publications

References 34 publications

Nonlinear coherent magneto-optical response of a single chiral carbon nanotube

Nonlinear coherent magneto-optical response of a single chiral carbon nanotube

Electromagnetic Scattering by Multi-Wall Carbon Nanotubes

Lower Frequency Limit of Carbon Nanotube Antenna

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