Polarized Raman spectroscopy reveals ubiquitous E2g phonon degeneracy lifting but distinct polarization dependences in collective CDW excitations across CsV3Sb5, RbV3Sb5, and KV3Sb5.
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Distinct lattice and charge excitations in AV3Sb5 kagome superconductors
Polarized Raman spectroscopy reveals ubiquitous E2g phonon degeneracy lifting but distinct polarization dependences in collective CDW excitations across CsV3Sb5, RbV3Sb5, and KV3Sb5.