Radical Spin Polarization and Magnetosensitivity from Reversible Energy Transfer

Area of Science:

• Quantum information science
• Spintronic technologies
• Molecular magnetism

Background:

• Molecular spins, specifically doublet (S = 1/2) and triplet (S = 1) states, are promising for quantum information and spintronics.
• Developing room-temperature photon-spin mechanisms is crucial for realizing their potential.
• Understanding spin interactions is key to designing functional molecular devices.

Purpose of the Study:

• To explore reversible energy transfer between molecular doublet and triplet spin states.
• To establish magnetosensitive luminescence and spin polarization using photon-spin mechanisms.
• To investigate the influence of exchange interactions on these photon-spin processes.

Main Methods:

• Investigating energy transfer dynamics between doublet and triplet states.
• Modeling amorphous and crystalline molecular systems.
• Analyzing the dependence of photon-spin mechanisms on exchange interaction parameters.

Main Results:

• Demonstrated the potential of exploiting reversible energy transfer for magnetosensitive phenomena.
• Revealed the impact of exchange interaction magnitude and sign on photon-spin mechanisms.
• Established a structure-function relationship between spin interactions and magnetosensitivity.

Conclusions:

• Reversible energy transfer between molecular spin states can enable magnetosensitive luminescence and spin polarization at room temperature.
• The exchange interaction critically influences the effectiveness of photon-spin mechanisms.
• A molecular design strategy for magnetic field inclination sensors based on spin interactions is proposed.