Stretching dependence of the vibration modes of a single-molecule Pt-H2-Pt bridge

Details Stretching dependence of the vibration modes of a single-molecule Pt-H2-Pt bridge Stretching dependence of the vibration modes of a single-molecule Pt-H2-Pt bridge

2004-09-24

arxiv.org/abs/cond-mat/0409640v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.71.161402

A conducting bridge of a single hydrogen molecule between Pt electrodes is formed in a break junction experiment. It has a conductance near the quantum unit, G_0 = 2e^2/h, carried by a single channel. Using point contact spectroscopy three vibration modes are observed and their variation upon stretching and isotope substitution is obtained. The interpretation of the experiment in terms of a Pt-H_2-Pt bridge is verified by Density Functional Theory calculations for the stability, vibrational modes, and conductance of the structure.

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