Quantum transport through STM-lifted single PTCDA molecules

Autor:	Pump, Florian, Temirov, Ruslan, Neucheva, Olga, Soubatch, Serguei, Tautz, Stefan, Rohlfing, Michael, Cuniberti, Gianaurelio
Rok vydání:	2008
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Applied Physics A: Materials Science and Processing 93, 335 (2008)
Druh dokumentu:	Working Paper
DOI:	10.1007/s00339-008-4837-z
Popis:	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. Comment: accepted for publication in Applied Physics A
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0808.2600 Zobrazit plný text záznamu View this record from Arxiv