کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5373268 1504213 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Inelastic electron tunneling through degenerate and nondegenerate ground state polymeric junctions
ترجمه فارسی عنوان
تونل شدن الکترون های ناپیوسته از طریق اتصالات پلیمری زمین دژنراسیون و غیر زنگ زده
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی


- Current-voltage characteristics of two polymeric junctions are studied.
- Current is reduced in phonon assistant tunneling regime.
- Behavior of current is independent of temperature.
- Elastic energy changes current drastically.

The inelastic electron transport properties through two polymeric (trans-polyacetylene and polythiophene) molecular junctions are studied using Keldysh nonequilibrium Green function formalism. The Hamiltonian of the polymers is described via Su-Schrieffer-Heeger model and the metallic electrodes are modeled by the wide-band approximation. Results show that the step-like behavior of the current-voltage characteristics is deformed in presence of strong electron-phonon interaction. Also, the magnitude of current is slightly decreased in the phonon assistant electron transport regime. In addition, it is observed that the I-V curves are independent of temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 452, 1 May 2015, Pages 61-66
نویسندگان
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