[en] We recently introduced a method based on density functional theory and a nonequilibrium Green's function technique for calculating the addition energies of single-molecule nanojunctions in the Coulomb blockade regime. Here we apply this approach to benzene molecules lying parallel and at various distances from two aluminum fcc (111) surfaces, and we discuss the distance dependence in our calculations in terms of electrostatic screening effects. The addition energies near the surface are reduced by about a factor of 2, which is comparable to previously reported calculations employing a computationally far more demanding quasiparticle description.
Disciplines :
Chemistry Physics
Author, co-author :
Stadler, R.
Geskin, V.M.
Cornil, Jérôme ; Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux
Language :
English
Title :
Screening Effects in a Density Functional Theory-Based Description of Molecular Junctions in the Coulomb Blockade Regime
Publication date :
25 March 2009
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
Publisher :
American Physical Society, Moldova
Volume :
79
Issue :
11
Pages :
113408, 1-4
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S817 - Chimie des matériaux nouveaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
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