phonons and electron-phonon scattering in carbon nano tubes pdf

Phonons And Electron-phonon Scattering In Carbon Nano Tubes Pdf

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Physical and Chemical Properties of Carbon Nanotubes. Single-walled carbon nanotube SWCNTs can be thought of as graphene a single graphene sheet wrapped up to form a one-atom-thick cylinders.

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. These changes in the Raman spectra provide us with a powerful tool for probing local doping in carbon nanotubes in electronic device structures, or charge carrier densities induced by environmental interactions, on a length scale determined by the light diffraction limit.

Huge magnetoresistance by phonon scattering in carbon nanotubes

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: In this work we study the electron-phonon coupling of carbon nanotubes, and the optical and vibrational properties of nanotubes and picotubes. Carbon nanotubes can be visualized as stripes cut out of a graphitic plane and rolled to a cylinder.

The direction of the stripe in the graphitic plane and its width determine the particular geometry of the nanotube. We calculate the coupling of totally symmetric phonons to the electronic system with ab initio methods.

View via Publisher. Save to Library. Create Alert. Launch Research Feed. Share This Paper. Figures and Tables from this paper. Figures and Tables. One Citation. Citation Type. Has PDF. Publication Type. More Filters. Raman bands of double-wall carbon nanotubes: comparison with single- and triple-wall carbon nanotubes, and influence of annealing and electron irradiation. Research Feed. Raman Scattering in Carbon Nanotubes. Electron-phonon and electron-photon interactions and resonant Raman scattering from the radial-breathing mode of single-walled carbon nanotubes.

View 1 excerpt, references results. Phonon linewidths and electron-phonon coupling in graphite and nanotubes. Highly Influential.

View 4 excerpts, references background. Electronic band structure of isolated and bundled carbon nanotubes. View 3 excerpts, references background and results. Radius and chirality dependence of the radial breathing mode and the G-band phonon modes of single-walled carbon nanotubes. View 1 excerpt, references background. View 2 excerpts, references background and methods. Accurate density functional calculations for the phonon dispersion relations of graphite layer and carbon nanotubes.

View 1 excerpt. Coupled dynamics of electrons and phonons in metallic nanotubes: Current saturation from hot-phonon generation. Radial breathing mode of single-walled carbon nanotubes: Optical transition energies and chiral-index assignment.

Temperature dependence of the optical transition energies of carbon nanotubes: the role of electron-phonon coupling and thermal expansion.

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Phonons and Electron-Phonon Scattering in Carbon Nanotubes

Electron-phonon scattering is studied within an effective-mass theory. A continuum model for acoustic phonons is introduced and electron-phonon interaction due to modification of band structure is derived as well as a normal deformation potential. In a metallic nanotube, the deformation potential does not participate in electron scattering and a metallic nanotube becomes nearly a one-dimensional ballistic conductor even at room temperature. A resistivity determined by small band-structure interaction depends on the chirality at low temperatures. A magnetic field perpendicular to the axis induces electron scattering by the deformation potential, giving rise to huge positive magnetoresistance.


PDF | Electron-phonon scattering is studied within an effective-mass theory. A continuum model for acoustic phonons is introduced and.


Scattering of electrons with acoustic phonons in single-walled carbon nanotubes

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. These changes in the Raman spectra provide us with a powerful tool for probing local doping in carbon nanotubes in electronic device structures, or charge carrier densities induced by environmental interactions, on a length scale determined by the light diffraction limit.

Phonon Scattering and Electron Transport in Single Wall Carbon Nanotube

Phonons and electron-phonon scattering in carbon nanotubes

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Owing to their influence on electrons and phonons, defects can significantly alter electrical conductance, and optical, mechanical and thermal properties of a material. Thus, understanding and control of defects, including dopants in low-dimensional systems, hold great promise for engineered materials and nanoscale devices.

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Acoustic phonons are modeled by applying the elastic continuum model to single wall nanotubes SWNTs with the nanotube approximated as an elastic membrane with cylindrical symmetry. The dispersion relations are compared for various diameter nanotubes. These calculations provide the full set of phonon modes for the SWNTs; this is in contrast to most calculations that consider a subset of these modes. The allowed phonon assisted electronic transitions are considered for intravalley-intrasubband and intravalley-intersubband transitions.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: In this work we study the electron-phonon coupling of carbon nanotubes, and the optical and vibrational properties of nanotubes and picotubes. Carbon nanotubes can be visualized as stripes cut out of a graphitic plane and rolled to a cylinder.

Electron-phonon scattering is studied within an effective-mass theory. A continuum model for acoustic phonons is introduced and electron-phonon interaction due to modification of band structure is derived as well as a normal deformation potential. In a metallic nanotube, the deformation potential does not partic-ipate in electron scattering and a metallic nanotube becomes nearly a one-dimensional ballistic conductor even at room temperature.

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