Inelastic X-ray scattering studies of phonon dispersions in superconductors at high pressures

Abstract

Electron-phonon interaction is of central importance for the electrical and heat transport properties of metals, and is directly responsible for charge-density-waves or (conventional) superconducting instabilities. The direct observation of phonon dispersion anomalies across electronic phase transitions can provide insightful information regarding the mechanisms underlying their formation. Here, we review the current status of phonon dispersion studies in superconductors under hydrostatic and uniaxial pressure. Advances in the instrumentation of high resolution inelastic X-ray scattering beamlines and pressure generating devices allow these measurements to be performed routinely at synchrotron beamlines worldwide.

8 pages, 6 figures. Invited review submitted to Superconductor Science and Technology, Focus issue on Hydride & High-Pressure Superconductors. References in figure caption fixed. Hyperlinks added

References in corpus (8)

• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Connection between charge-density-wave order and charge transport in the cuprate superconductors
• Giant Kohn anomaly and the phase transition in charge density wave ZrTe_3
• Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors
• Charge ordering in superconducting copper oxides
• Incommensurate phonon anomaly and the nature of charge density waves in cuprates
• Rapid Suppression of the Charge Density Wave in YBa${}_2$Cu${}_3$O${}_{6.6}$ under Hydrostatic Pressure
• Superconductivity and hybrid soft modes in TiSe${}_2$

Cited by in corpus (6)

• Pressure-dependent Electronic Superlattice in the Kagome-Superconductor CsV${}_3$Sb${}_5$
• Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBa${}_2$Cu${}_3$O${}_{\mathrm{y}}$
• The electron-phonon coupling constant, the Fermi temperature and unconventional superconductivity in the carbonaceous sulfur hydride 190 K superconductor
• In-plane Isotropy of the Low Energy Phonon Anomalies in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Hybridization of lattice and charge order excitations in a superconducting cuprate
• The influence of phonon symmetry and electronic structure on the electron-phonon coupling momentum dependence in cuprates