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Molecularly Inherent Voltage-controlled Conductance Switching

A. Blum, J. Kushmerick, D. P. Long, C. Patterson, J. Yang, Jay Henderson, Y. Yao, J. Tour, R. Shashidhar, B. Ratna
Published 2005 · Materials Science, Medicine

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Molecular electronics has been proposed as a pathway for high-density nanoelectronic devices. This pathway involves the development of a molecular memory device based on reversible switching of a molecule between two conducting states in response to a trigger, such as an applied voltage. Here we demonstrate that voltage-triggered switching is indeed a molecular phenomenon by carrying out studies on the same molecule using three different experimental configurations—scanning tunnelling microscopy, crossed-wire junction, and magnetic-bead junction. We also demonstrate that voltage-triggered switching is distinctly different from stochastic switching, essentially a transient (time-dependent) phenomenon that is independent of the applied voltage.
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