Premium
Geometrical Factors in Conductance Through Molecular Films
Author(s) -
KORNILOVITCH P. E.,
BRATKOVSKY A. M.
Publication year - 2002
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2002.tb03034.x
Subject(s) - conductance , electrode , molecule , atomic orbital , materials science , orientation (vector space) , conjugated system , molecular orbital , condensed matter physics , chemistry , chemical physics , molecular physics , physics , quantum mechanics , polymer , mathematics , geometry , composite material , organic chemistry , electron
A bstract : We have studied the conductance of molecular films as a function of orientation of the molecules in the film with respect to electrodes. Depending on the angle between the axis of the molecules and the normal to the electrode, the conductance may change by more than an order of magnitude. This is a consequence of the strong directional character of p orbitals that determine the conductance through the conjugated molecules. We illustrate this general result on an exactly solvable model and also present the calculations for two different experimentally studied molecular films sandwiched between gold electrodes.