Probing electronic excitations in molecular conduction
摘要
We identify experimental signatures in the current-voltage (I-V) characteristics of weakly contacted molecules directly arising from excitations in their many electron spectrum. The current is calculated using a multielectron master equation in the Fock space of an exact diagonalized model many-body Hamiltonian for a prototypical molecule. Using this approach, we explain several nontrivial features in frequently observed I-Vs in terms of a rich spectrum of excitations that may be hard to describe adequately with standard one-electron self-consistent field (SCF) theories.
引用
@article{arxiv.cond-mat/0505375,
title = {Probing electronic excitations in molecular conduction},
author = {B. Muralidharan and A. W. Ghosh and S. Datta},
journal= {arXiv preprint arXiv:cond-mat/0505375},
year = {2009}
}
备注
Significantly different content -- inadequacy of SCF approach described with simple model, and a whole new class of experiments showing gate modulated current steps discussed in terms of excitations in the molecular many-body space