From a local Green's function to molecular charge transport

被引：5

作者：

Albrecht, M ^{[1
]}

Schnurpfeil, A

Cuniberti, G

机构：

[1] Univ Siegen, Theoret Chem FB08, D-57068 Siegen, Germany

[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2004年 / 241卷 / 09期

关键词：

D O I：

10.1002/pssb.200404780

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A local-orbital based ab initio approach to obtain the Green's function for large heterogeneous systems is developed. First a Green's function formalism is introduced based on exact diagonalization. Then the self energy is constructed from an incremental scheme, rendering the procedure feasible, while at the same time physical insight into different local correlation contributions is obtained. Subsequently the Green's function is used in the frame of the Landauer theory and the wide band approximation to calculate the electronic transmission coefficient across molecular junctions. The theory is applied to meta- and para-ditholbenzene linked to gold electrodes and various correlation contributions are analyzed. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2179 / 2188

页数：10

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