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Title: Acoustic plasmons and conducting carriers in hole-doped cuprate superconductors

Journal Article · · Physical Review. B
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [1];  [4];  [5];  [5];  [6]; ORCiD logo [7];  [1]; ORCiD logo [8]
  1. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. National Tsing Hua Univ., Hsinchu (Taiwan)
  4. Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa (Japan)
  5. Northeastern University, Boston, MA (United States)
  6. Academia Sinica, Taipei (Taiwan); Sun Yat-Sen Univ., Kaohsiung (Taiwan)
  7. Waseda Univ., Shinjuku (Japan); National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  8. National Synchrotron Radiation Research Center, Hsinchu (Taiwan); National Tsing Hua Univ., Hsinchu (Taiwan)

The layered crystal structures of cuprates enable collective charge excitations fundamentally different from those of three-dimensional metals. Acoustic plasmons have been observed in electron-doped cuprates by resonant inelastic X-ray scattering (RIXS); in contrast, whether acoustic plasmons exist in hole-doped cuprates is under debate, despite extensive measurements. This contrast led us to investigate the charge excitations of hole-doped cuprate La2-xSrxCuO4. Here we present incidentenergy-dependent RIXS measurements and calculations of collective charge response via the loss function to reconcile the aforementioned issues. Our results provide evidence for the acoustic plasmons of Zhang-Rice singlet (ZRS), which has a character of the Cu 3dx2-y2 strongly hybridised with the O 2p orbitals; the metallic behaviour is implied to result from the movement of ZRS rather than the simple hopping of O 2p holes.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC). Basic Energy Sciences (BES); Ministry of Science and Technology of Taiwan; Japan Society for the Promotion of Science (JSPS)
Grant/Contract Number:
89233218CNA000001; FG02-07ER46352; 103-2112-M-213-008-MY3; 108-2923-M-213-001; 19K03741
OSTI ID:
1873327
Report Number(s):
LA-UR-20-22849; TRN: US2307077
Journal Information:
Physical Review. B, Vol. 105, Issue 23; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (62)

Three-dimensional collective charge excitations in electron-doped copper oxide superconductors journal October 2018
Interlayer coupling induced quasiparticles journal June 2020
One-band tight-binding model parametrization of the high- T c cuprates including the effect of k z dispersion journal August 2005
c -axis transport and resistivity anisotropy of lightly to moderately doped La 2 x Sr x CuO 4 single crystals: Implications on the charge transport mechanism journal June 2002
Generalized Hedin’s Equations for Quantum Many-Body Systems with Spin-Dependent Interactions journal March 2008
Electronic correlations in solids, studied using electron energy-loss spectroscopy journal June 2001
Analysis of resonant inelastic x-ray scattering in La 2 Cu O 4 journal January 2005
Collective Nature of Spin Excitations in Superconducting Cuprates Probed by Resonant Inelastic X-Ray Scattering journal May 2015
Quantum Correlated Plasmons and Their Tunability in Undoped and Doped Mott-Insulator Cuprates journal October 2019
Plasmon excitations in layered high- T c cuprates journal August 2016
Electron energy-loss spectroscopy: A versatile tool for the investigations of plasmonic excitations journal August 2014
Comparative soft-x-ray resonant-photoemission study on Bi2Sr2CaCu2O8, CuO, and Cu2O journal April 1992
Superconductor-to-nonsuperconductor transition in ( La 1 x Sr x ) 2 CuO 4 as investigated by transport and magnetic measurements journal August 1989
Dispersion anomalies induced by the low-energy plasmon in the cuprates journal January 2007
Resonant inelastic x-ray scattering studies of elementary excitations journal June 2011
Detection of Acoustic Plasmons in Hole-Doped Lanthanum and Bismuth Cuprate Superconductors Using Resonant Inelastic X-Ray Scattering journal December 2020
Optical Spectroscopy of Plasmons and Excitons in Cuprate Superconductors journal October 2004
Spectroscopic evidence for strongly correlated electronic states in La-Sr-Cu and Y-Ba-Cu oxides journal June 1987
Entropic Origin of Pseudogap Physics and a Mott-Slater Transition in Cuprates journal March 2017
High-Energy Magnetic Excitations in the Cuprate Superconductor Bi 2 Sr 2 CaCu 2 O 8 + δ : Towards a Unified Description of Its Electronic and Magnetic Degrees of Freedom journal April 2013
Long-wavelength collective excitations of charge carriers in high- T c superconductors journal October 1991
Effective Hamiltonian for the superconducting Cu oxides journal March 1988
Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprate Superconductors journal December 2004
An accurate first-principles treatment of doping-dependent electronic structure of high-temperature cuprate superconductors journal March 2018
A Structural Probe of the Doped Holes in Cuprate Superconductors journal July 2002
Zero-doping state and electron–hole asymmetry in an ambipolar cuprate journal July 2010
Magnetic Excitations and Phase Separation in the Underdoped La 2 x Sr x CuO 4 Superconductor Measured by Resonant Inelastic X-Ray Scattering journal February 2010
Theory of high- T c superconductivity in oxides journal June 1987
Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La 2 x Sr x CuO 4 journal April 2018
Antiferromagnetic ground state of La 2 CuO 4 : A parameter-free ab initio description journal September 2018
Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge journal September 2017
Anomalous density fluctuations in a strange metal journal May 2018
Temperature-Dependent Ellipsometry Measurements of Partial Coulomb Energy in Superconducting Cuprates journal August 2016
Pseudogap and Spin Fluctuations in the Normal State of the Electron-Doped Cuprates journal September 2004
Metallic Behavior of Lightly Doped L a 2 x S r x C u O 4 with a Fermi Surface Forming an Arc journal July 2003
Doping evolution of the oxygen K -edge x-ray absorption spectra of cuprate superconductors using a three-orbital Hubbard model journal April 2013
Collapse of the Magnetic Gap of Cuprate Superconductors within a Three-Band Model of Resonant Inelastic X-Ray Scattering journal March 2006
Acoustic plasmons and doping evolution of Mott physics in resonant inelastic x-ray scattering from cuprate superconductors journal March 2008
Plasmons in cuprate superconductors journal August 1990
Defect Chemistry of La2−xSrxCuO4−δ: Oxygen Nonstoichiometry and Thermodynamic Stability journal June 1997
Origin of high-energy charge excitations observed by resonant inelastic X-ray scattering in cuprate superconductors journal January 2019
Cluster-model calculation of the electronic structure of CuO: A model material for the high- T c superconductors journal January 1990
Strength of correlations in electron- and hole-doped cuprates journal June 2010
From quantum matter to high-temperature superconductivity in copper oxides journal February 2015
Metal-insulator transitions journal October 1998
Development of the Soft X-ray AGM–AGS RIXS beamline at the Taiwan Photon Source journal March 2021
Out-of-plane orbital characters of intrinsic and doped holes in La 2 x Sr x CuO 4 journal April 1992
Magic Doping Fractions for High-Temperature Superconductors journal May 2005
Bulk sensitive x-ray absorption spectroscopy free of self-absorption effects journal February 2011
Layer plasmons and high- T c superconductivity journal May 1988
Intense paramagnon excitations in a large family of high-temperature superconductors journal July 2011
Optical spectra of La 2 x Sr x CuO 4 : Effect of carrier doping on the electronic structure of the CuO 2 plane journal April 1991
Crossover of Charge Fluctuations across the Strange Metal Phase Diagram journal December 2019
Strong charge fluctuations manifested in the high-temperature Hall coefficient of high- T c cuprates journal January 2007
Bimagnon studies in cuprates with resonant inelastic x-ray scattering at the O K edge. II. Doping effect in La 2 x Sr x CuO 4 journal June 2012
Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering journal August 2017
Appearance of universal metallic dispersion in a doped Mott insulator journal September 2008
Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2−xCexCuO4 journal January 2020
Energy gaps in high-transition-temperature cuprate superconductors journal June 2014
Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate journal November 2021
Electronic states in La 2 x Sr x CuO 4 + δ probed by soft-x-ray absorption journal January 1991
Dynamic Structure Factor: An Introduction journal January 1993