کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547281 | 997632 | 2010 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Linear optical response of carbon nanotubes under axial magnetic field
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Linear optical response of carbon nanotubes under axial magnetic field Linear optical response of carbon nanotubes under axial magnetic field](/preview/png/1547281.png)
چکیده انگلیسی
We considered single walled carbon naotubes (SWCNTs) as real three dimensional (3D) systems in a cylindrical coordinate. The optical matrix elements and linear susceptibility, Ï(Ï), in the tight binding approximation in terms of one-dimensional wave vector, kz and subband index, l are calculated. In an external axial magnetic field optical frequency dependence of linear susceptibility are investigated. We found that axial magnetic field has two effects on the imaginary part of the linear susceptibility spectrum, in agreement with experimental results. The first effect is broadening and the second, splitting. Also we found that for all metallic zigzag and armchair SWCNTs, the axial magnetic field leads to the creation of a peak with energy less than 1.5Â eV, contrary to what is observed in the absence of a magnetic field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 42, Issue 6, April 2010, Pages 1850-1860
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 42, Issue 6, April 2010, Pages 1850-1860
نویسندگان
Rostam Moradian, Raad Chegel, Somayeh Behzad,