Mechanical control of vibrational states in single-molecule junctions

Details Mechanical control of vibrational states in single-molecule junctions Mechanical control of vibrational states in single-molecule junctions

2010-11-14

arxiv.org/abs/1011.3226v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 pages, 4 figures

Scientific paper

We report on inelastic electron tunneling spectroscopy measurements carried out on single molecules incorporated into a mechanically controllable break-junction of Au and Pt electrodes at low temperature. Here we establish a correlation between the molecular conformation and conduction properties of a single-molecule junction. We demonstrate that the conductance through single molecules crucially depends on the contact material and configuration by virtue of their mechanical and electrical properties. Our findings prove that the charge transport via single molecules can be manipulated by varying both the molecular conformation (e.g., trans or gauche) and the contact material.

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