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Incoherent tunneling and heat dissipation in molecular bridges

A Pecchia1, A Gagliardi2, G Solomon3, A Di Carlo1, Th Frauenheim2 and J R Reimers3

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Simulated IV characteristics and inelastic electron tunneling spectra of octanedithiol chemisorbed on gold electrodes are presented. The geometric and electronic structure is obtained from calculations based on a density functional scheme. A non-equilibrium Green's function formalism is employed to deal with the transport aspect of the problem. Both the IV and the calculated spectra show good agreement with experimental results and suggest further details in the assignment and characterization of such spectra.


PACS

68.43.Mn Adsorption kinetics

73.40.Gk Tunneling

73.20.At Surface states, band structure, electron density of states

71.15.Mb Density functional theory, local density approximation, gradient and other corrections

68.47.De Metallic surfaces

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Dates

Issue 1 (2006)



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