Crystal Chirality Identified by Circular Polarized X-rays in Resonant X-ray Diffraction

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  • 円偏光を利用した共鳴X線回折によるキラリティー観察
  • エン ヘンコウ オ リヨウ シタ キョウメイ Xセン カイセツ ニ ヨル キラリティー カンサツ

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Abstract

<p>Enantiomers, or stereoisomers, have crystal structures that are mirror images of each other and are thus handed, like our right and left hands. Low-quartz（SiO2）and Berlinite（AlPO4）have enantiomers belonging to a space-group pair, P3121（right-handed screw）and P3221（left-handed screw）. We show that resonant Bragg diffraction using positive and negative circularly polarized X-rays at the resonant energies reveals the handedness of crystals by X-ray helicity coupling to a crystal screw axis. Our results are of general importance and demonstrate a new method to directly study chiral motifs in structures that include biomaterials, liquid crystals, magnets, multiferroics, etc.</p>

Journal

  • Nihon Kessho Gakkaishi

    Nihon Kessho Gakkaishi 60 (4), 177-184, 2018-08-31

    The Crystallographic Society of Japan

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