Bistable hysteresis and resistance switching in hydrogen gold junctions

Autor:	Trouwborst, M. L., Huisman, E. H., van der Molen, S. J., van Wees, B. J.
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Physical Review B 80, 081407 (R) (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.80.081407
Popis:	Current-voltage characteristics of H2-Au molecular junctions exhibit intriguing steps around a characteristic voltage of 40 mV. Surprisingly, we find that a hysteresis is connected to these steps with a typical time scale > 10 ms. This time constant scales linearly with the power dissipated in the junction beyond an ofset power P_s = IV_s. We propose that the hysteresis is related to vibrational heating of both the molecule in the junction and a set of surrounding hydrogen molecules. Remarkably, we can engineer our junctions such that the hysteresis' characteristic time becomes >days. We demonstrate that reliable switchable devices can be built from such junctions. Comment: Submitted to Phys. Rev. Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0906.5006 Zobrazit plný text záznamu View this record from Arxiv