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

Abstract

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.

5 pages, 4 figures

References in corpus (3)

• Conductance of Pd-H nanojunctions
• Partly Occupied Wannier Functions
• Electronic transport and vibrational modes in the smallest molecular bridge: H2 in Pt nanocontacts

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