Evidence of phonon-charge-density-waves coupling in ErTe${}_3$

Abstract

The vibrational properties of ErTe${}_3$ were investigated using Raman spectroscopy and analyzed on the basis of peculiarities of the RTe${}_3$ crystal structure. Four Raman active modes for the undistorted structure, predicted by factor-group analysis, are experimentally observed and assigned according to diperiodic symmetry of the ErTe${}_3$ layer. By analyzing temperature dependence of the Raman mode energy and intensity we have provided the clear evidence that all Raman modes, active in the normal phase, are coupled to the charge density waves. In addition, new modes have been observed in the distorted state.

References in corpus (9)

• Fermi Surface reconstruction in the CDW state of CeTe3 observed by photoemission
• Theory of stripes in quasi two dimensional rare-earth tritellurides
• Single-particle and collective mode couplings associated with 1- and 2-directional electronic ordering in metallic RTe${}_3$ (R = Ho, Dy, Tb)
• Pressure dependence of the charge-density-wave gap in rare-earth tri-tellurides
• Evidence for coupling between collective state and phonons in two-dimensional charge-density-wave systems
• Raman scattering evidence for a cascade-like evolution of the charge-density-wave collective amplitude mode
• Pressure-induced quenching of the charge-density-wave state observed by x-ray diffraction
• Temperature dependence of the excitation spectrum in the charge-density-wave ErTe${}_3$ and HoTe${}_3$ systems
• Evidence for electron-phonon interaction in Fe${}_{1-x}$M${}_x$Sb${}_2$ (M=Co, Cr) single crystals

Cited by in corpus (9)

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• Lattice dynamics and phase transition in CrI${}_3$ single crystals
• Probing IrTe2 crystal symmetry by polarized Raman scattering
• Robust superconductivity intertwined with charge density wave and disorder in Pd-intercalated ErTe${}_3$
• Uncovering the Hidden Ferroaxial Density Wave as the Origin of the Axial Higgs Mode in RTe${}_3$
• Fluctuations and pairing in Fe-based superconductors: Light scattering experiments
• Anomalous thermal transport and violation of Wiedemann-Franz law in the critical regime of a charge density wave transition
• Raman scattering study of tetragonal magnetic phase in Sr${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$: structural symmetry and electronic gap