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11:33
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
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Coherently driven, ultrafast electron-phonon dynamics in transport junctions
Joshua E Szekely1, Tamar Seideman1
1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
The Journal of Chemical Physics
|August 3, 2014
Summary
This study introduces a time-domain model for molecular electronics, exploring electron-phonon interactions. It reveals insights into phase decoherence and population relaxation in electronic systems, advancing nanoscale transport understanding.
Area of Science:
- Physics
- Materials Science
- Quantum Chemistry
Background:
- Most molecular electronics studies use static energy domains.
- Time-domain approaches are emerging for nanoscale transport, requiring new theoretical models.
Purpose of the Study:
- To develop a time-domain model for coherently driven molecular electronics.
- To investigate electron-phonon interactions in conductance junctions.
Main Methods:
- A time-domain model treating electrons and phonons equally.
- Analysis of electron-phonon coupling from weak to strong regimes.
- Exploration of coherent energy pathway interference.
Main Results:
- New insights into phase decoherence and population relaxation in electronic systems.
- Demonstration of interference between electronic pathways.
- Model applicable to various coupled electron-phonon systems.
Conclusions:
- The time-domain model offers a novel perspective on nanoscale transport phenomena.
- Provides a more fundamental understanding of electron-phonon interactions beyond phenomenological parameters.
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