Structural contributions to the pressure-tuned charge-density-wave to superconductor transition in ZrTe3: Raman scattering studies

Abstract

Superconductivity evolves as functions of pressure or doping from charge-ordered phases in a variety of strongly correlated systems, suggesting that there may be universal characteristics associated with the competition between superconductivity and charge order in these materials. We present an inelastic light (Raman) scattering study of the structural changes that precede the pressure-tuned charge-density-wave (CDW) to superconductor transition in one such system, ZrTe3. In certain phonon bands, we observe dramatic linewidth reductions that accompany CDW formation, indicating that these phonons couple strongly to the electronic degrees of freedom associated with the CDW. The same phonon bands, which represent internal vibrations of ZrTe3 prismatic chains, are suppressed at pressures above ~10 kbar, indicating a loss of long-range order within the chains, specifically amongst intrachain Zr-Te bonds. These results suggest a distinct structural mechanism for the observed pressure-induced suppression of CDW formation and provide insights into the origin of pressure-induced superconductivity in ZrTe3.

6 pages, 5 figures

References in corpus (6)

• Tuning the Charge Density Wave and Superconductivity in CuxTaS2
• Giant Kohn anomaly and the phase transition in charge density wave ZrTe_3
• Quantum and classical mode softening near the charge-density-wave/superconductor transition of Cu${}_x$TiSe${}_2$: Raman spectroscopic studies
• Coexistence of bulk superconductivity and charge density wave in CuxZrTe3
• Charge density waves and phonon-electron coupling in ZrTe${}_3$ investigated by Raman spectroscopy and first-principles calculations
• Raising Tc in charge density wave superconductor ZrTe3 by Ni intercalation

Cited by in corpus (14)

• One-Dimensional van der Waals Quantum Materials -- State of the Art and Perspectives
• Superconductivity and Charge Density Wave in ZrTe${}_{3-x}$Se${}_x$
• Distinct fingerprints of charge density waves and electronic standing waves in ZrTe${}_3$
• Disorder quenching of the Charge Density Wave in ZrTe3
• Observation of charge density wave transition in TaSe3 mesowires
• Thermal dynamics of charge density wave pinning in ZrTe3
• Local corrugation and persistent charge density wave in ZrTe3 with Ni intercalation
• Thermal conductivity of the quasi-1D materials TaSe3 and ZrTe3
• Thermal transport and mixed valence in ZrTe${}_3$ doped with Hf and Se
• Detailed Electronic Structure of the Three-Dimensional Fermi Surface and its Sensitivity to Charge Density Wave Transition in ZrTe3 Revealed by High Resolution Laser-Based Angle-Resolved Photoemission Spectroscopy
• Enhanced Superconductivity and Electron Correlations in Intercalated ZrTe${}_3$
• Sliding phasons in Moiré Ladders
• Insulator-to-superconductor transition in quasi-one-dimensional HfS3 under pressure
• Tracing the main elements and electron orbitals that induce superconducting phase transition