Quantum transport through STM-lifted single PTCDA molecules

被引：19

作者：

Pump, Florian ^{[1
,2
]}

Temirov, Ruslan ^{[3
]}

Neucheva, Olga ^{[3
]}

Soubatch, Serguei ^{[3
]}

Tautz, Stefan ^{[3
]}

Rohlfing, Michael ^{[4
]}

Cuniberti, Gianaurelio ^{[1
,2
]}

机构：

[1] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

[2] Tech Univ Dresden, Max Bergmann Ctr Biomat, D-01062 Dresden, Germany

[3] Forschungszentrum Julich, JARA, Inst Bio & Nanosyst 3, D-52425 Julich, Germany

[4] Univ Osnabruck, Dept Phys, D-49069 Osnabruck, Germany

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2008年 / 93卷 / 02期

关键词：

D O I：

10.1007/s00339-008-4837-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using a scanning tunneling microscope we have measured the quantum conductance through a PTCDA molecule for different configurations of the tip-molecule-surface junction. A peculiar conductance resonance arises at the Fermi level for certain tip to surface distances. We have relaxed the molecular junction coordinates and calculated transport by means of the Landauer/Keldysh approach. The zero bias transmission calculated for fixed tip positions in lateral dimensions but different tip-substrate distances show a clear shift and sharpening of the molecular chemisorption level on increasing the STM-surface distance, in agreement with experiment.

引用

页码：335 / 343

页数：9

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