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.
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Phonon-mediated spin-spin interactions in insulators produce temperature-dependent anisotropic couplings with oscillatory spatial decay, potentially accounting for weak ferromagnetism in chiral compounds when inversion symmetry is broken.
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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.
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Phonon mediated spin-spin interactions
Phonon-mediated spin-spin interactions in insulators produce temperature-dependent anisotropic couplings with oscillatory spatial decay, potentially accounting for weak ferromagnetism in chiral compounds when inversion symmetry is broken.