Stretching dependence of the vibration modes of a single-molecule Pt-H2-Pt bridge -: art. no. 161402

被引：134

作者：

Djukic, D

Thygesen, KS

Untiedt, C

Smit, RHM

Jacobsen, KW

van Ruitenbeek, JM

机构：

[1] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[2] Tech Univ Denmark, Dept Phys, Ctr Atom Scale Mat Phys, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.71.161402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

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页数：4

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