Molecular dynamics simulations reveal that the CDW in monolayer TiSe2 melts via a two-step fluctuation regime with defects and domain walls, while anisotropic thermal fluctuations spontaneously stabilize an asymmetric 3Q chiral CDW with C2 symmetry.
van Wezel, Chirality and orbital order in charge density waves, Europhysics Letters96, 67011 (2011)
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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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Fluctuation-driven multi-step charge density wave transition in monolayer TiSe$_2$
Molecular dynamics simulations reveal that the CDW in monolayer TiSe2 melts via a two-step fluctuation regime with defects and domain walls, while anisotropic thermal fluctuations spontaneously stabilize an asymmetric 3Q chiral CDW with C2 symmetry.
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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.