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Doping dependence of the magnetic excitations in La2-x SrxCuO4

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [3];  [4];  [5];  [5];  [6];  [6];  [7];  [1];  [8];  [8];  [5];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Diamond Light Source, Ltd., Oxfordshire (United Kingdom)
  3. Univ. of Bristol, Bristol (United Kingdom)
  4. Univ. Pierre et Marie Curie - Case 115, Paris Cedex 05 (France)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  7. National Synchrotron Radiation Research Center, Hsinchu (Taiwan); National Tsing Hua Univ., Hsinchu (Taiwan)
  8. Brookhaven National Lab. (BNL), Upton, NY (United States); Yale Univ., New Haven, CT (United States)
The magnetic correlations within the cuprates have undergone intense scrutiny as part of efforts to understand high-temperature superconductivity. We explore the evolution of the magnetic correlations along the nodal direction of the Brillouin zone in La2–xSrxCuO4, spanning the doping phase diagram from the antiferromagnetic Mott insulator at x = 0 to the metallic phase at x = 0.26. Magnetic excitations along this direction are found to be systematically softened and broadened with doping, at a higher rate than the excitations along the antinodal direction. This phenomenology is discussed in terms of the nature of the magnetism in the doped cuprates. As a result, survival of the high-energy magnetic excitations, even in the overdoped regime, indicates that these excitations are marginal to pairing, while the influence of the low-energy excitations remains ambiguous.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI ID:
1345728
Alternate ID(s):
OSTI ID: 1344594
Report Number(s):
BNL--113511-2017-JA; KC0201060; KC0203020
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 7 Vol. 95; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Anisotropic damping and wave vector dependent susceptibility of the spin fluctuations in La 2 − x Sr x CuO 4 studied by resonant inelastic x-ray scattering journal December 2019
Damped spin excitations in a doped cuprate superconductor with orbital hybridization journal June 2017
Decrease of d -wave pairing strength in spite of the persistence of magnetic excitations in the overdoped Hubbard model journal July 2017
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
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
Doping Dependence of Collective Spin and Orbital Excitations in the Spin-1 Quantum Antiferromagnet La 2 − x Sr x NiO 4 Observed by X Rays journal April 2017
A high-energy-resolution resonant inelastic X-ray scattering spectrometer at ID20 of the European Synchrotron Radiation Facility journal February 2018
Decrease of d-wave pairing strength in spite of the persistence of magnetic excitations in the overdoped Hubbard model text January 2017
Damped spin excitations in a doped cuprate superconductor with orbital hybridization text January 2017

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