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Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
Published on: July 4, 2016
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Temperature activated chiral induced spin selectivity
1Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden.
The Journal of Chemical Physics
|August 28, 2023
Summary
Temperature significantly enhances chiral induced spin selectivity in chiral molecules containing transition metal or rare earth elements. This effect, linked to nuclear motion, creates a temperature-dependent magnetic environment, boosting spin selectivity at higher temperatures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Chemistry
Background:
- Chiral molecules with transition metal or rare earth elements exhibit chiral induced spin selectivity (CICC).
- Spin selectivity is typically suppressed at low temperatures in these systems.
Purpose of the Study:
- To investigate the temperature dependence of chiral induced spin selectivity.
- To elucidate the underlying mechanism for the observed temperature reinforcement.
Main Methods:
- Experimental studies on chiral molecules containing transition metal or rare earth elements.
- Analysis relating temperature to nuclear motion and spin interactions.
Main Results:
- Spin selectivity is suppressed at low temperatures but increases significantly with rising temperature.
- Nuclear motion, influenced by temperature, modulates local spin moments.
- An anisotropic magnetic environment is generated and enhanced by temperature.
Conclusions:
- Temperature plays a crucial role in reinforcing chiral induced spin selectivity.
- Nuclear displacements and indirect exchange interactions are key to the temperature-dependent spin selectivity.
- The induced local anisotropy field is the origin of enhanced spin selectivity at elevated temperatures.
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