کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1544026 1512876 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Alternative equation of motion approach applied to transport through a quantum dot
ترجمه فارسی عنوان
معادله جایگزین روش حرکت برای حمل و نقل از طریق نقطه کوانتومی استفاده می شود
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی


• We study non-equilibrium electron transport through a quantum dot coupled to metallic leads.
• Equation of motion approach in which Green functions is differentiated over both time variables is used.
• We obtain the resonance Kondo state in the particle–hole symmetric case and in the asymmetric cases.
• We calculate the density of the states of quantum dot and the differential conductance as a function of bias voltage.

We study non-equilibrium electron transport through a quantum dot coupled to metallic leads. We use an alternative equation of motion approach in which we calculate the retarded Green function of the impurity by differentiating Green functions over both time variables. Such an approach allows us to obtain the resonance Kondo state in the particle–hole symmetric case and in the asymmetric cases. We apply this technique for calculating the density of the states of quantum dot and the differential conductance as a function of bias voltage. The differential conductance dependence on temperature and on Coulomb interaction is also calculated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 73, September 2015, Pages 76–82
نویسندگان
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