Vibrationally Induced Two-Level Systems in Single-Molecule Junctions

Details Vibrationally Induced Two-Level Systems in Single-Molecule Junctions Vibrationally Induced Two-Level Systems in Single-Molecule Junctions

2006-07-18

arxiv.org/abs/cond-mat/0607447v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.226806

Single-molecule junctions are found to show anomalous spikes in dI/dV spectra. The position in energy of the spikes are related to local vibration mode energies. A model of vibrationally induced two-level systems reproduces the data very well. This mechanism is expected to be quite general for single-molecule junctions. It acts as an intrinsic amplification mechanism for local vibration mode features and may be exploited as a new spectroscopic tool.

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