Contactless electronic transport in a bio-molecular junction
- Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville 3010 (Australia)
Molecular electronics hold promise for next generation ultra-low power, nano-scale integrated electronics. The main challenge in molecular electronics is to make a reliable interface between molecules and metal electrodes. Interfacing metals and molecules detrimentally affects the characteristics of nano-scale molecular electronic devices. It is therefore essential to investigate alternative arrangements such as contact-less tunneling gaps wherever such configurations are feasible. We conduct ab initio density functional theory and non-equilibrium Green's functions calculations to investigate the transport properties of a biocompatible glycine molecular junction. By analyzing the localized molecular orbital energy distributions and transmission probabilities in the transport-gap, we find a glycine molecule confined between two gold electrodes, without making a contact, is energetically stable and possesses high tunneling current resembling an excellent ohmic-like interface.
- OSTI ID:
- 22311214
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
DENSITY FUNCTIONAL METHOD
ELECTRIC CONTACTS
ELECTRODES
ELECTRONIC EQUIPMENT
ENERGY SPECTRA
EQUILIBRIUM
GLYCINE
GOLD
GREEN FUNCTION
INTERFACES
MOLECULAR ORBITAL METHOD
MOLECULES
SEMICONDUCTOR JUNCTIONS
TRANSMISSION
TUNNEL EFFECT