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Title: Spectroscopic fingerprint of charge order melting driven by quantum fluctuations in a cuprate

Journal Article · · Nature Physics
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [4];  [5];  [5]; ORCiD logo [6]; ORCiD logo [1];  [7]; ORCiD logo [6]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  2. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  4. Stanford Univ., CA (United States)
  5. National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
  7. Leiden Univ. (Netherlands). Inst.-Lorentz for Theoretical Physics

Copper oxide high-TC superconductors possess a number of exotic orders that coexist with or are proximal to superconductivity. Quantum fluctuations associated with these orders may account for the unusual characteristics of the normal state, and possibly affect the superconductivity. Yet, spectroscopic evidence for such quantum fluctuations remains elusive. Here in this paper, we use resonant inelastic X-ray scattering to reveal spectroscopic evidence of fluctuations associated with a charge order in nearly optimally doped Bi2Sr2CaCu2O8+δ. In the superconducting state, while the quasielastic charge order signal decreases with temperature, the interplay between charge order fluctuations and bond-stretching phonons in the form of a Fano-like interference increases, an observation that is incompatible with expectations for competing orders. Invoking general principles, we argue that this behaviour reflects the properties of a dissipative system near an order–disorder quantum critical point, where the dissipation varies with the opening of the pseudogap and superconducting gap at low temperatures, leading to the proliferation of quantum critical fluctuations, which melt charge order.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1633896
Journal Information:
Nature Physics, Vol. 17, Issue 1; ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)Copyright Statement
Country of Publication:
United States
Language:
English

References (33)

Observation of two types of charge-density-wave orders in superconducting La2-xSrxCuO4 journal July 2019
Ubiquitous Interplay Between Charge Ordering and High-Temperature Superconductivity in Cuprates journal December 2013
Re-entrant charge order in overdoped (Bi,Pb)2.12Sr1.88CuO6+δ outside the pseudogap regime journal June 2018
Uniaxial pressure control of competing orders in a high-temperature superconductor journal November 2018
Why the temperature is high journal July 2004
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
Phonon anomalies and dynamic stripes journal November 2012
Where is the quantum critical point in the cuprate superconductors? journal March 2010
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
Neutron-scattering profile of Q 0 phonons in BCS superconductors journal September 1997
Charge density wave fluctuations in La 2 x Sr x CuO 4 and their competition with superconductivity journal June 2014
Lattice symmetry breaking in cuprate superconductors: stripes, nematics, and superconductivity journal November 2009
Evidence for a charge collective mode associated with superconductivity in copper oxides from neutron and x-ray scattering measurements of La 2 x Sr x CuO 4 journal January 2014
Anomalous dispersion of LO phonons in La 1.85 Sr 0.15 CuO 4 journal December 1999
Ultrafast time-resolved x-ray scattering reveals diffusive charge order dynamics in La 2– x Ba x CuO 4 journal August 2019
The microscopic structure of charge density waves in underdoped YBa2Cu3O6.54 revealed by X-ray diffraction journal December 2015
Quantum criticality in spin chains with non-Ohmic dissipation journal June 2012
Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high- T c superconductor journal August 2019
Spatially modulated 'Mottness' in La2-xBaxCuO4 journal December 2005
How to detect fluctuating stripes in the high-temperature superconductors journal October 2003
Quantum tunnelling in a dissipative system journal September 1983
Inelastic X-ray scattering in YBa2Cu3O6.6 reveals giant phonon anomalies and elastic central peak due to charge-density-wave formation journal November 2013
Energy gaps in high-transition-temperature cuprate superconductors journal June 2014
Coexistence of periodic modulation of quasiparticle states and superconductivity in Bi2Sr2CaCu2O8+  journal August 2003
Pseudogap Phase and the Quantum-Critical Point in Copper-Oxide Metals journal October 1999
Diffusion and Localization in a Dissipative Quantum System journal October 1983
Charge-transfer fluctuation, d -wave superconductivity, and the B 1 g Raman phonon in cuprates journal January 1995
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
Evidence for stripe correlations of spins and holes in copper oxide superconductors journal June 1995