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Electron transfer and spin-orbit coupling: Can nuclear motion lead to spin selective rates?
Suraj S Chandran1, Yanze Wu1, Hung-Hsuan Teh1
1Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
The Journal of Chemical Physics
|May 7, 2022
Summary
This study explores electron transfer using a spin-boson model with phase-dependent coupling. While equilibrium states are invariant to coupling sign, non-equilibrium dynamics reveal potential for spin polarization in photo-induced processes.
Area of Science:
- Quantum mechanics
- Condensed matter physics
- Chemical physics
Background:
- Electron transfer is fundamental in chemical and physical processes.
- Spin-boson models are crucial for understanding quantum dissipation.
- Position-dependent coupling introduces complex dynamics.
Purpose of the Study:
- Investigate electron transfer dynamics in a novel spin-boson model.
- Analyze the role of a position-dependent phase coupling (e^iWx).
- Examine equilibrium and non-equilibrium initial conditions.
Main Methods:
- Utilized a spin-boson inspired model.
- Incorporated a phase factor dependent on position (e^iWx).
- Studied both equilibrium and non-equilibrium scenarios.
Main Results:
- Equilibrium results demonstrated complete invariance to the sign of W.
- Non-equilibrium results showed a clear dependence on the sign of W.
- The model suggests potential for spin polarization in photo-induced transfer.
Conclusions:
- The sign of the coupling phase W is critical for non-equilibrium dynamics.
- Photo-induced electron transfer with spin-orbit coupling may lead to spin polarization.
- This model offers insights into quantum dynamics and spin phenomena.
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