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Bistable hysteresis and resistance switching in hydrogen gold junctions
- Source :
- Physical Review B 80, 081407 (R) (2009)
- Publication Year :
- 2009
-
Abstract
- 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.<br />Comment: Submitted to Phys. Rev. Lett
Details
- Database :
- arXiv
- Journal :
- Physical Review B 80, 081407 (R) (2009)
- Publication Type :
- Report
- Accession number :
- edsarx.0906.5006
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.80.081407