Coulomb effects in tunneling through a quantum dot stack -: art. no. 125328

被引：24

作者：

Sprekeler, H ^{[1
]}

Kiesslich, G ^{[1
]}

Wacker, A ^{[1
]}

Schöll, E ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.69.125328

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tunneling through two vertically coupled quantum dots is studied by means of a Pauli master equation model. The observation of double peaks in the current-voltage characteristic in a recent experiment is analyzed in terms of the tunnel coupling between the quantum dots and the coupling to the contacts. Different regimes for the emitter chemical potential indicating different peak scenarios in the tunneling current are discussed in detail. We show by comparison with a density matrix approach that the interplay of coherent and incoherent effects in the stationary current can be fully described by this approach.

引用

页数：6

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