Transport theory of coupled quantum dots based on the auxiliary-operator method

被引：16

作者：

Oh, Jung Hyun ^{[1
]}

Ahn, D. ^{[1
]}

Bubanja, Vladimir ^{[2
]}

机构：

[1] Univ Seoul, Inst Quantum Informat Proc & Syst, Seoul 130743, South Korea

[2] Ind Res Ltd, Lower Hutt, New Zealand

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 20期

关键词：

EQUILIBRIUM; MOLECULE; SYSTEMS; FERMION; STATE; MODEL; SPINS;

D O I：

10.1103/PhysRevB.83.205302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We formulate the theory of electron transport through coupled quantum dots by extending the auxiliary-operator representation. By using the generating functional technique, we derive the exact expressions for currents, dot-occupation numbers, and spin correlations, and examine them based on the nonequilibrium Green's function method under the noncrossing approximation (NCA). Our formulation generalizes the previous NCA approaches by allowing full occupation numbers with a finite Coulomb repulsion.

引用

页数：12

共 33 条

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