abbas zarifi | Yasouj University (original) (raw)
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CSIC (Consejo Superior de Investigaciones Científicas-Spanish National Research Council)
Centre National de la Recherche Scientifique / French National Centre for Scientific Research
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Papers by abbas zarifi
Physical Review B, Jan 1, 2006
A general analytical expression for the linear optical susceptibility of single walled zigzag car... more A general analytical expression for the linear optical susceptibility of single walled zigzag carbon nanotubes for light polarized parallel to the nanotube axis has been obtained. Using a simple orthogonal tight binding model with nearest neighbor interactions, the electric dipole ...
Physical Review B, Jan 1, 2008
The optical properties of zigzag carbon nanotubes in magnetic fields are analyzed. Using a tight-... more The optical properties of zigzag carbon nanotubes in magnetic fields are analyzed. Using a tight-binding model with nearest-neighbor interactions, general expressions are computed for the diagonal and off-diagonal elements of the frequency dependent susceptibility in the ...
Journal of Physics: Condensed Matter, Jan 1, 2008
Using a universal density of states (Mintmire and White 1998 Phys. Rev. Lett. 81 2506), we have f... more Using a universal density of states (Mintmire and White 1998 Phys. Rev. Lett. 81 2506), we have found an analytic expression for the long-axis linear susceptibility of single-walled carbon nanotubes valid for arbitrary diameter and chirality. The applicability of our general expression has been assessed by comparison with numerical calculations. Excellent agreement is demonstrated in the low-energy range for semiconducting carbon nanotubes having a moderate or large diameter. The agreement is less convincing for metallic nanotubes having the same diameter as semiconducting ones and the reason for this difference has been clarified. Based on the simple closed-form expression for the linear susceptibility and using the perturbation treatment developed by Aspnes and Rowe (1972 Phys. Rev. B 5 4022), an analytic expression for the third-order nonlinear optical susceptibility χ((3))(ω;0,0,ω) has been derived for arbitrary semiconducting single-walled carbon nanotubes.
Physical Review B, Jan 1, 2007
Using the perturbation treatment developed by Aspnes and Rowe [Phys. Rev. B 5, 4022 (1972)], an a... more Using the perturbation treatment developed by Aspnes and Rowe [Phys. Rev. B 5, 4022 (1972)], an analytic expression for the third-order nonlinear optical susceptibility χ (3) (ω;0,0,ω ) is computed and analyzed for single walled zigzag carbon nanotubes. By improving ...
Physical Review B, Jan 1, 2009
APS Meeting Abstracts, Jan 1, 2010
Physical Review B, Jan 1, 2006
A general analytical expression for the linear optical susceptibility of single walled zigzag car... more A general analytical expression for the linear optical susceptibility of single walled zigzag carbon nanotubes for light polarized parallel to the nanotube axis has been obtained. Using a simple orthogonal tight binding model with nearest neighbor interactions, the electric dipole ...
Physical Review B, Jan 1, 2008
The optical properties of zigzag carbon nanotubes in magnetic fields are analyzed. Using a tight-... more The optical properties of zigzag carbon nanotubes in magnetic fields are analyzed. Using a tight-binding model with nearest-neighbor interactions, general expressions are computed for the diagonal and off-diagonal elements of the frequency dependent susceptibility in the ...
Journal of Physics: Condensed Matter, Jan 1, 2008
Using a universal density of states (Mintmire and White 1998 Phys. Rev. Lett. 81 2506), we have f... more Using a universal density of states (Mintmire and White 1998 Phys. Rev. Lett. 81 2506), we have found an analytic expression for the long-axis linear susceptibility of single-walled carbon nanotubes valid for arbitrary diameter and chirality. The applicability of our general expression has been assessed by comparison with numerical calculations. Excellent agreement is demonstrated in the low-energy range for semiconducting carbon nanotubes having a moderate or large diameter. The agreement is less convincing for metallic nanotubes having the same diameter as semiconducting ones and the reason for this difference has been clarified. Based on the simple closed-form expression for the linear susceptibility and using the perturbation treatment developed by Aspnes and Rowe (1972 Phys. Rev. B 5 4022), an analytic expression for the third-order nonlinear optical susceptibility χ((3))(ω;0,0,ω) has been derived for arbitrary semiconducting single-walled carbon nanotubes.
Physical Review B, Jan 1, 2007
Using the perturbation treatment developed by Aspnes and Rowe [Phys. Rev. B 5, 4022 (1972)], an a... more Using the perturbation treatment developed by Aspnes and Rowe [Phys. Rev. B 5, 4022 (1972)], an analytic expression for the third-order nonlinear optical susceptibility χ (3) (ω;0,0,ω ) is computed and analyzed for single walled zigzag carbon nanotubes. By improving ...
Physical Review B, Jan 1, 2009
APS Meeting Abstracts, Jan 1, 2010