The role of quantum interference in determining transport properties of molecular bridges

• Authors: Kamil Walczak
• Languages of publication: EN

Abstracts

EN

An analytical approach to the electron transport phenomena in molecular devices is presented. The analyzed devices are composed of various molecular bridges attached to two semi-infinite electrodes. Molecular system is described within the tight-binding model, while the coupling to the electrodes is analyzed through the use of Newns-Anderson chemisorption theory. The current-voltage (I-V) characteristics are calculated through the integration of transmission function in the standard Landauer formulation. The essential question of quantum interference effect of electron waves is diseussed in three aspects: (i) the geometry of a molecular bridge, (ii) the presence of an external magnetic field and (iii) the location of chemical substituent.

Keywords

EN

molecular electronics; electronic transport; quantum interference; molecular devices; antiresonance

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2004
• Volume: 2
• Issue: 3
• Pages: 524-533

Dates

published

1 - 9 - 2004

online

1 - 9 - 2004

Contributors

author

Kamil Walczak

• Insitute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614, Poznań, Poland

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Identifiers

DOI

10.2478/BF02476205