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Mirror-image crystals reverse the direction of light-driven currents

Image: Phys.org

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  • Phys.org · October 2, 2026 18:40
    The circular photogalvanic effect (CPGE), a phenomenon that generates helicity-dependent photocurrents in noncentrosymmetric materials, can originate purely from a crystal's internal structure without a contribution from the surface, a study from Science Tokyo reveals.