Influences of a Side-Coupled Triple Quantum Dot on Kondo Transport Through a Quantum Dot
Influences of a Side-Coupled Triple Quantum Dot on Kondo Transport Through a Quantum Dot
复制标题
侧面耦合三量子点对通过量子点的近藤输运的影响
DOI:
10.1088/0253-6102/54/5/27
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发表时间:
2010-11
影响因子:
3.1
通讯作者:
Qin Zhi-Jie
中科院分区:
文献类型:
--
作者:
Jiang Zhao-Tan;Yang Yan-Nan;Qin Zhi-Jie
Kondo transport properties through a Kondo-type quantum dot (QD) with a side-coupled triple-QD structure are systematically investigated by using the non-equilibrium Green's function method. We firstly derive the formulae of the current, the linear conductance, the transmission coefficient, and the local density of states. Then we carry out the analytical and numerical studies and some universal conductance properties are obtained. It is shown that the number of the conductance valleys is intrinsically determined by the side-coupled QDs and at most equal to the number of the QDs included in the side-coupled structure in the asymmetric limit. In the process of forming the conductance valleys, the side-coupled QD system plays the dominant role while the couplings between the Kondo-type QD and the side-coupled structure play the subsidiary and indispensable roles. To testify the validity of the universal conductance properties, another different kinds of side-coupled triple-QD structures are considered. It should be emphasized that these universal properties are applicable in understanding this kind of systems with arbitrary many-QD side structures.
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影响因子:
3.7
作者:
B. H. Wu;J. C. Cao;K. Ahn
通讯作者:
B. H. Wu;J. C. Cao;K. Ahn
影响因子:
8.6
作者:
MEIR, Y;WINGREEN, NS
通讯作者:
WINGREEN, NS
影响因子:
3.7
作者:
Kobayashi, K;Aikawa, H;Iye, Y
通讯作者:
Iye, Y
影响因子:
8.6
作者:
P. Simon;Rosa López;Y. Oreg
通讯作者:
P. Simon;Rosa López;Y. Oreg
影响因子:
8.6
作者:
A. Georges;Y. Meir
通讯作者:
A. Georges;Y. Meir