25 research outputs found
Probing the Coupling of Charge-Transfer Processes Across Liquid/Liquid Interfaces by the Scanning Electrochemical Microscope
No full textScanning Electrochemical Microscopy. Theory of the Feedback Mode for Hemispherical Ultramicroelectrodes:Â Steady-State and Transient Behavior
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Effect of Molecule−Metal Electronic Coupling on Through-Bond Hole Tunneling across Metal−Organic Monolayer−Semiconductor Junctions
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Pump-Probe Noise Spectroscopy of Molecular Junctions.
No full textThe slow response of electronic components in junctions limits the direct applicability of pump-probe type spectroscopy in assessing the intramolecular dynamics. Recently the possibility of getting information on a sub-picosecond time scale from dc current measurements was proposed. We revisit the idea of picosecond resolution by pump-probe spectroscopy from dc measurements and show that any intramolecular dynamics not directly related to charge transfer in the current direction is missed by current measurements. We propose a pump-probe dc shot noise spectroscopy as a suitable alternative. Numerical examples of time-dependent and average responses of junctions are presented for generic models
Pump–Probe Noise Spectroscopy of Molecular Junctions
No full textThe slow response of electronic components
in junctions limits the
direct applicability of pump–probe type spectroscopy in assessing
the intramolecular dynamics. Recently the possibility of getting information
on a sub-picosecond time scale from dc current measurements was proposed.
We revisit the idea of picosecond resolution by pump–probe
spectroscopy from dc measurements and show that any intramolecular
dynamics not directly related to charge transfer in the current direction
is missed by current measurements. We propose a pump–probe
dc shot noise spectroscopy as a suitable alternative. Numerical examples
of time-dependent and average responses of junctions are presented
for generic models
