Towards reproducible, scalable lateral molecular electronic devices

Journal Article · Mon Aug 25 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4894091· OSTI ID:22310983

Durkan, Colm; Zhang, Qian ^[1]

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1. Nanoscience Centre, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA (United Kingdom)

An approach to reproducibly fabricate molecular electronic devices is presented. Lateral nanometer-scale gaps with high yield are formed in Au/Pd nanowires by a combination of electromigration and Joule-heating-induced thermomechanical stress. The resulting nanogap devices are used to measure the electrical properties of small numbers of two different molecular species with different end-groups, namely 1,4-butane dithiol and 1,5-diamino-2-methylpentane. Fluctuations in the current reveal that in the case of the dithiol molecule devices, individual molecules conduct intermittently, with the fluctuations becoming more pronounced at larger biases.

• OSTI ID: 22310983
• Journal Information: Applied Physics Letters, Vol. 105, Issue 8; 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

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELECTROPHORESIS
FLUCTUATIONS
GOLD
JOULE HEATING
MOLECULES
NANOWIRES
PALLADIUM
QUANTUM WIRES
STRESSES