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Size Effect in Correlation-Driven Charge Migration in Correlation Bands of Alkyne Chains
Enguerran Belles1, Franck Rabilloud1, Alexander I Kuleff2
1Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69622, France.
Charge migration in alkyne chains was studied using ab initio simulations. Scaling laws were found for charge migration time and correlation band density of states, enabling predictions for larger systems.
Area of Science:
- Quantum chemistry
- Molecular dynamics
- Attosecond science
Background:
- Inner-valence ionization can trigger charge migration in molecules.
- Alkyne chains exhibit unique electronic properties due to their structure.
- Correlation bands play a crucial role in electron dynamics.
Purpose of the Study:
- To explore correlation-driven charge migration in alkyne chains (C4-C12).
- To identify scaling laws governing charge migration dynamics.
- To assess the potential for attochemistry applications.
Main Methods:
- Utilizing ab initio simulations to model electronic processes.
- Investigating charge migration initiated by inner-valence ionization.
- Analyzing the density of states of correlation bands.
Main Results:
- Observed scaling laws for charge migration time scales.
- Identified scaling behavior in the density of states of correlation bands.
- Demonstrated predictable relaxation time scales for larger alkyne systems.
Conclusions:
- Charge migration dynamics in alkyne chains follow predictable scaling laws.
- These findings facilitate predictions for larger molecular systems.
- The study highlights potential for attochemistry using correlation band dynamics.
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