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This research establishes a theoretical framework for the chirality-induced spin selectivity (CISS) effect using established particle physics symmetries, resolving previous inconsistencies in predicting how structural handedness influences electron spin. By confirming that CISS operates within parity and time-reversal constraints without requiring new physical laws, the study provides a robust basis for designing experiments and developing applications in magnetism and biology. The work represents a significant step forward in understanding fundamental quantum mechanical couplings between structure and spin dynamics.

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Researchers Link Chirality to Spin Via Established Symmetries

Quantum ZeitgeistOctober 2, 20265 min read

Previously unable to quantitatively predict chirality-induced spin selectivity, existing models struggled with its appearance across diverse systems. Now, established principles from particle physics provide a framework understanding these phenomena without invoking new laws. This perspective demonstrates consistency with known symmetries, parity and time reversal, offering a basis for both experiment design and interpretation.

A connection between structural chirality and electron spin polarization has been established through principles of particle physics symmetry, creating a framework capable of interpreting current experimental observations of the chirality-induced spin selectivity (CISS) effect. CISS does not violate parity or time-reversal symmetries, providing a key conceptual foundation for further investigation into the coupling between structure and spin. A new understanding exists regarding how structural chirality influences electron spin; this phenomenon, known as chirality-induced spin selectivity (CISS), connects an object’s handedness with its impact on electron behaviour. The team demonstrated that CISS operates within…

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