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Journal of Nanomaterials
Volume 2013, Article ID 814694, 5 pages
http://dx.doi.org/10.1155/2013/814694
Research Article

Symmetric Negative Differential Resistance in a Molecular Nanosilver Chain

1Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea
2Department of Physics, Incheon National University, Incheon 406-772, Republic of Korea

Received 22 October 2013; Accepted 30 October 2013

Academic Editor: Mun Seok Jeong

Copyright © 2013 Tae Kyung Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The electrical transport properties of the molecular nanosilver chain have been investigated. We observed the symmetric negative differential resistance (NDR) in the current-voltage characteristics. The peak voltage ( ) increased but the peak current ( ) decreased upon cooling. The self-capacitance effect of the silver chain crystal is suggested to explain this unconventional NDR phenomenon.