Frequency-domain stimulated and spontaneous light emission signals at molecular junctions

Journal Article · Thu Aug 21 00:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4892108· OSTI ID:22419792

Harbola, Upendra ^[1]; Agarwalla, Bijay Kumar; Mukamel, Shaul ^[2]

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1. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012 (India)
2. Department of Chemistry, University of California, Irvine, California 92697 (United States)

Using a diagrammatic superoperator formalism we calculate optical signals at molecular junctions where a single molecule is coupled to two metal leads which are held at different chemical potentials. The molecule starts in a nonequilibrium steady state whereby it continuously exchanges electrons with the leads with a constant electron flux. Expressions for frequency domain optical signals measured in response to continuous laser fields are derived by expanding the molecular correlation functions in terms of its many-body states. The nonunitary evolution of molecular states is described by the quantum master equation.

• OSTI ID: 22419792
• Journal Information: Journal of Chemical Physics, Vol. 141, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ELECTRON EXCHANGE
ELECTRONS
EMISSION
MOLECULES
SIGNALS