Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2

Abstract

X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in CuxTiSe2 as a function of copper intercalation in order to clarify the relationship between the CDW and superconductivity. The results show a CDW incommensuration arising at an intercalation value coincident with the onset of superconductivity at around x=0.055(5). Additionally, it was found that the charge density wave persists to higher intercalant concentrations than previously assumed, demonstrating that the CDW does not terminate inside the superconducting dome. A charge density wave peak was observed in samples up to x=0.091(6), the highest copper concentration examined in this study. The phase diagram established in this work suggests that charge density wave incommensuration may play a role in the formation of the superconducting state.

5 pages, 4 figures

References in corpus (6)

• Gate-tunable Phase Transitions in 1T-TaS${}_2$
• Evidence for an excitonic insulator phase in 1T-TiSe${}_2$
• Controlling many-body states by the electric-field effect in a two-dimensional material
• Tuning the Charge Density Wave and Superconductivity in CuxTaS2
• Emergence of Fermi pockets in an excitonic CDW melted novel superconductor
• Superconducting Order from Disorder in 2H-TaSe${}_{2-x}$S${}_x$ (0$\le$x$\le$2)

Cited by in corpus (27)

• Influence of domain walls in the incommensurate charge density wave state of Cu intercalated 1$T$-TiSe${}_2$
• Manipulating charge-density-wave in monolayer $1T$-TiSe${}_2$ by strain and charge doping: A first-principles investigation
• On the origin of the anomalous peak in the resistivity of TiSe${}_2$
• Semiconductor-metal phase transition and emergent charge density waves in 1T-ZrX${}_2$ (X = Se, Te) at the two-dimensional limit
• Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2
• Local resilience of the $1T$-TiSe${}_2$ charge density wave to Ti self-doping
• Electron correlations rule the phonon-driven instability in single layer TiSe${}_2$
• Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives
• Appearance of a Domain Structure and its Electronic states in Iron Doped 1$T$-TaS${}_2$ Observed using Scanning Tunneling Microscopy and Spectroscopy
• Precursor phase with full phonon softening above the charge-density-wave phase transition in $2H$-TaSe${}_2$
• Electron-phonon coupling and superconductivity-induced distortion of the phonon lineshape in V${}_3$Si
• Perturbation of charge density waves in 1T-TiSe${}_2$
• Lifshitz transition enabling superconducting dome around the quantum critical point in TiSe${}_2$
• Identification of soft modes across the commensurate-to-incommensurate charge density wave transition in 1$T$-TaSe${}_2$
• Carrier-Density Control of the Quantum-Confined 1$T$-TiSe${}_2$ Charge-Density-Wave
• Robust Charge-Density Wave Correlations in Optimally-Doped YBa2Cu3Oy
• Charge-density-wave quantum critical point under pressure in 2$H$-TaSe${}_2$
• The maximal superconductivity in proximity to charge density wave quantum critical point in Cu${}_x$TiSe${}_2$
• Impact of disorder in the charge-density-wave state of Pd-intercalated ErTe${}_3$ revealed by the electrodynamic response
• Umklapp-driven first-order transition into a charge-density wave phase
• Superconducting gap and its Little-Parks like oscillations with high-order harmonics in lithium intercalated 1T-TiSe${}_2$
• Structural dimerization and charge-orbital ordering in a ferromagnetic semiconductor LiV2S4 monolayer
• Doping-induced nematic and stripe orders within the charge density wave state of TiSe${}_2$
• Incommensurate charge density wave on multiband intermetallic systems exhibiting competing orders
• Excitons and Optical Response in Excitonic Insulator Candidate TiSe${}_2$
• Laser-Induced Commensurate-Incommensurate Transition of Charge Order in a Hubbard Superlattice
• Revisiting the charge-density-wave superlattice of 1$T$-TiSe${}_2$