Chiral crystals with screw symmetry undergo a spontaneous spin-selective structural phase transition driven by handedness-dependent phonon renormalization, producing helical spin density waves and chiral lattice distortions.
Throughout this article, we have focused on chiral crystals, where the screw symmetry endows the electrons and phonons with well-defined pseudo angular momentum
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Spontaneous spin-selective structural phase transition in chiral crystals
Chiral crystals with screw symmetry undergo a spontaneous spin-selective structural phase transition driven by handedness-dependent phonon renormalization, producing helical spin density waves and chiral lattice distortions.