Optically induced current in molecular conduction nanojunctions with intrinsic semiconductor contacts

Details Optically induced current in molecular conduction nanojunctions with intrinsic semiconductor contacts Optically induced current in molecular conduction nanojunctions with intrinsic semiconductor contacts

2012-01-23

arxiv.org/abs/1201.4682v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages, 2 figures

Scientific paper

We propose a new approach to coherent control of transport via molecular junctions, which bypasses several of the hurdles to experimental realization of optically manipulated nanoelectronics noted in the previous literature. The method is based on the application of intrinsic semiconductor contacts and optical frequencies below the semiconductor bandgap. To explore the coherently controlled electronic dynamics, we introduce a density matrix formalism that accounts for both the discrete molecular state and the semiconductor quasicontinua within a single master equation and offers an analytically soluble limit. Our results illustrate the potential of semiconductor contacts in coherent control of photocurrent.

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