کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1542279 | 996714 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical estimation of optical hyperpolarizability appearance in fullerene molecule and carbon nanotubes interacting with ionic crystal surface
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Theoretical estimation of optical hyperpolarizability appearance in fullerene molecule and carbon nanotubes interacting with ionic crystal surface Theoretical estimation of optical hyperpolarizability appearance in fullerene molecule and carbon nanotubes interacting with ionic crystal surface](/preview/png/1542279.png)
چکیده انگلیسی
The first hyperpolarizability (HP) of fullerene and finite length carbon nanotubes (FCN), attached to the neutral surfaces of SiO2 (1 1 0), CdS(1 1 2 0), and CdTe(1 1 0) crystals, is calculated in the framework of the semi-empirical version of the time-dependent Hartree-Fock theory (TDHF). The norm of β-vector invariant, induced by the substrate, is of the same order as in some organic molecules with the observed nonlinear optical properties. The orthogonal to the substrate β-component is responsible for generation of the second harmonic by fullerene according to Hoshi and co-authors [H. Hoshi, N. Nakamura, Y. Maruyama, T. Nakagawa, S. Suzuki, H. Shiromaru, Y. Achiba, Jpn. J. Appl. Phys. 30 (1991) L1397]. The calculated value of this component is shown sufficient for the weak generation. It is found that zig-zag FCN, in contrast to armchair FCN, are characterized by the resonant behaviour of HP for second harmonic generation (SHG) at low frequencies due to the existence of quasi-degenerate (hyperbolic) levels in the close vicinity of the Fermi level. This ability is created by the external ionic crystal potential and affected by mutual electron interaction of molecules in the layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 273, Issue 2, 15 May 2007, Pages 564-574
Journal: Optics Communications - Volume 273, Issue 2, 15 May 2007, Pages 564-574
نویسندگان
M.M. Mestechkin,