Unified description of inelastic propensity rules for electron transport through nanoscale junctions

Abstract

We present a method to analyze the results of first-principles based calculations of electronic currents including inelastic electron-phonon effects. This method allows us to determine the electronic and vibrational symmeties in play, and hence to obtain the so-called propensity rules for the studied systems. We show that only a few scattering states -- namely those belonging to the most transmitting eigenchannels -- need to be considered for a complete description of the electron transport. We apply the method on first-principles calculations of four different systems and obtain the propensity rules in each case.

4 pages, 4 figures, 1 table http://link.aps.org/abstract/PRL/v100/e226604

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