Observation of negative differential resistance in DNA molecular junctions
Observation of negative differential resistance in DNA molecular junctions
Kang, N.; Erbe, A.; Scheer, E.
The mechanically controllable break junction technique is used to study charge transport through suspended DNA molecules. The current-voltage (I-V) characteristics in an aqueous solution display series of negative differential resistance (NDR) and hysteresis behavior. Under high-vacuum conditions, the peak positions of NDR shift to lower voltage, and the amplitude is reduced dramatically. The observed NDR behavior is consistent with the polarization mechanism in DNA molecular junctions, which demonstrates a change in the coupling of the molecular level to a polaron mode under different environment.
Keywords: DNA electronics; molecular electronics; mechanically controllable break junctions
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Applied Physics Letters 96(2010), 023701
DOI: 10.1063/1.3291113
Cited 47 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-14369
Publ.-Id: 14369