skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Enhanced Electron-Phonon Coupling for Charge-Density-Wave Formation in La1.8-$$x$$Eu0.2Sr$$x$$CuO4+$$δ$$

Journal Article · · Physical Review Letters

Charge density wave (CDW) correlations are prevalent in all copper-oxide superconductors. While CDWs in conventional metals are driven by coupling between lattice vibrations and electrons, the role of the electron-phonon coupling (EPC) in cuprate CDWs is strongly debated. Using Cu L3 edge resonant inelastic x-ray scattering, we study the CDW and Cu-O bond-stretching phonons in the stripe-ordered cuprate La1.8-xEu0.2SrxCuO4+δ. In this work, we investigate the interplay between charge order and EPC as a function of doping and temperature and find that the EPC is enhanced in a narrow momentum region around the CDW ordering vector. By detuning the incident photon energy from the absorption resonance, we extract an EPC matrix element at the CDW ordering vector of M ≃ 0.36 eV , which decreases to M ≃ 0.30 eV at high temperature in the absence of the CDW. Our results suggest a feedback mechanism in which the CDW enhances the EPC which, in turn, further stabilizes the CDW.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation
Grant/Contract Number:
SC0012704; FG02-06ER46285; SC0012368; GBMF4542
OSTI ID:
1661642
Alternate ID(s):
OSTI ID: 1958768
Report Number(s):
BNL-219830-2020-JAAM; TRN: US2203608
Journal Information:
Physical Review Letters, Vol. 125, Issue 9; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

References (43)

Role of Lattice Coupling in Establishing Electronic and Magnetic Properties in Quasi-One-Dimensional Cuprates journal June 2013
Anomalous Dispersion of LO Phonons in La 1.85 Sr 0.15 CuO 4 at Low Temperatures journal January 1999
Charge ordering in La 1.8 x Eu 0.2 Sr x CuO 4 studied by resonant soft x-ray diffraction journal March 2009
Ubiquitous Interplay Between Charge Ordering and High-Temperature Superconductivity in Cuprates journal December 2013
Dispersion, damping, and intensity of spin excitations in the monolayer ( Bi,Pb ) 2 ( Sr,La ) 2 CuO 6 + δ cuprate superconductor family journal October 2018
Re-entrant charge order in overdoped (Bi,Pb)2.12Sr1.88CuO6+δ outside the pseudogap regime journal June 2018
Charged magnetic domain lines and the magnetism of high- T c oxides journal October 1989
Momentum and polarization dependence of single-magnon spectral weight for Cu L 3 -edge resonant inelastic x-ray scattering from layered cuprates journal May 2010
Experimental Determination of Momentum-Resolved Electron-Phonon Coupling journal July 2019
Determining the electron-phonon coupling in superconducting cuprates by resonant inelastic x-ray scattering: Methods and results on Nd 1 + x Ba 2 x Cu 3 O 7 δ journal May 2020
Anisotropic Electron-Phonon Interaction in the Cuprates journal September 2004
High-temperature charge density wave correlations in La 1.875 Ba 0.125 CuO 4 without spin–charge locking journal November 2017
Collective Nature of Spin Excitations in Superconducting Cuprates Probed by Resonant Inelastic X-Ray Scattering journal May 2015
From quantum matter to high-temperature superconductivity in copper oxides journal February 2015
Competition between Charge- and Spin-Density-Wave Order and Superconductivity in La 1.875 Ba 0 . 1 2 5 x Sr x CuO 4 journal April 2002
Direct observation of charge order in underdoped and optimally doped Bi 2 ( Sr , La ) 2 CuO 6 + δ by resonant inelastic x-ray scattering journal November 2016
Determining the electron-phonon coupling strength from Resonant Inelastic X-ray Scattering at transition metal L-edges journal July 2011
Polarization-resolved Cu L 3 -edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBa 2 Cu 3 O 7 δ journal April 2019
Landau theory of stripe phases in cuprates and nickelates journal January 1998
Electron-Phonon Coupling in the Bulk of Anatase TiO 2 Measured by Resonant Inelastic X-Ray Spectroscopy journal August 2015
Charge Order Driven by Fermi-Arc Instability in Bi2Sr2-xLaxCuO6+  journal December 2013
Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba2Cu3O6+x journal July 2012
Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates journal January 2018
The Ground State of the Pseudogap in Cuprate Superconductors journal November 2006
Intense paramagnon excitations in a large family of high-temperature superconductors journal July 2011
Persistence of magnetic excitations in La2−xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal journal August 2013
Electronic liquid-crystal phases of a doped Mott insulator journal June 1998
Electron–phonon coupling reflecting dynamic charge inhomogeneity in copper oxide superconductors journal April 2006
Magnetic-field-induced charge-stripe order in the high-temperature superconductor YBa2Cu3Oy journal September 2011
Non-Fermi-liquid behavior and d-wave superconductivity near the charge-density-wave quantum critical point journal June 1996
Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high- T c superconductor journal August 2019
Electron-phonon coupling and the coexistence of superconductivity and charge-density wave in monolayer NbSe 2 journal April 2019
Spatially modulated 'Mottness' in La2-xBaxCuO4 journal December 2005
How to detect fluctuating stripes in the high-temperature superconductors journal October 2003
Inelastic X-ray scattering in YBa2Cu3O6.6 reveals giant phonon anomalies and elastic central peak due to charge-density-wave formation journal November 2013
Directly Characterizing the Relative Strength and Momentum Dependence of Electron-Phonon Coupling Using Resonant Inelastic X-Ray Scattering journal October 2016
Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67 journal October 2012
Charge order and its connection with Fermi-liquid charge transport in a pristine high-Tc cuprate journal December 2014
Dispersive charge density wave excitations in Bi2Sr2CaCu2O8+δ journal June 2017
Phase diagram of charge order in La 1 . 8 x Eu 0 . 2 Sr x CuO 4 from resonant soft x-ray diffraction journal March 2011
Paving the Way to Ultra-High-Resolution Resonant Inelastic X-ray Scattering with the SIX Beamline at NSLS-II journal March 2018
Extended Phonon Collapse and the Origin of the Charge-Density Wave in 2 H NbSe 2 journal September 2011
Evidence for stripe correlations of spins and holes in copper oxide superconductors journal June 1995