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Preprint article · Journal article

Stretching dependence of the vibration modes of a single-molecule Pt-H-2-Pt bridge

By Djukic, D.1; Thygesen, Kristian Sommer2,3; Untiedt, C.1; Smit, R.H.M.1; Jacobsen, Karsten Wedel2,3; Ruitenbeek, J.M. van1

From

Leiden University1

Computational Atomic-scale Materials Design, Department of Physics, Technical University of Denmark2

Department of Physics, Technical University of Denmark3

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 isotope substitution is obtained.

The stretching dependence for each of the modes allows uniquely classifying them as longitudinal or transversal modes. 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.

Language: English
Year: 2005
Pages: 5
ISSN: 1550235x , 10980121 and 01631829
Types: Preprint article and Journal article
DOI: 10.1103/PhysRevB.71.161402
ORCIDs: Thygesen, Kristian Sommer and Jacobsen, Karsten Wedel
Keywords

cond-mat.mes-hall

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