کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9789667 1512913 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamical and point symmetry of the Kondo effect in triangular quantum dot
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Dynamical and point symmetry of the Kondo effect in triangular quantum dot
چکیده انگلیسی
In this work we concentrate on the point symmetry of a triangular triple quantum dot and its interplay with the spin rotation symmetry in the context of Kondo tunneling through this kind of artificial molecule. A fully symmetric triangular triple quantum dot is considered, consisting of three identical puddles with the same individual properties (energy levels and Coulomb blockade parameters) and inter-dot coupling (tunnel amplitudes and electrostatic interaction). The underlying Kondo physics is determined by the product of a discrete rotation symmetry group in real space and a continuous rotation symmetry in spin space. These symmetries are reflected in the resulting exchange hamiltonian which naturally involves spin and orbital degrees of freedom. The ensuing poor-man scaling equations are solved and the Kondo temperature is calculated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 29, Issues 1–2, October 2005, Pages 334-340
نویسندگان
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