کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1544716 | 1512895 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conductance features and quasi-bound states in a longitudinal asymmetric quantum point contact
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
• The conductance in the asymmetric quasi-one-dimensional structure is studied.
• We calculated resonances on all sheets of the Riemann surface of the Green function.
• The correlation between conductance steps and Breit–Wigner resonances is found.
We calculate, in the Büttiker–Landauer approach, the ballistic conductance in the quasi-one-dimensional structure with longitudinal asymmetric potential. We have shown that there is a plateau of conductance in the area typical for the “0.7 anomaly”. Using the computational method proposed, we have calculated the energies and lifetimes of the electron resonance states in the system considered. It is shown that in this case the conductance plateau is generated by resonances of Breit–Wigner type.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 54, December 2013, Pages 331–335
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 54, December 2013, Pages 331–335
نویسندگان
Yu.P. Chuburin, G.V. Wolf,