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Doping dependence of the magnetic excitations in La2−x Srx CuO4

DOI: 10.1103/PhysRevB.95.075139 DOI Help

Authors: D. Meyers (Brookhaven National Laboratory; Oklahoma State University) , H. Miao (Brookhaven National Laboratory) , A. Walters (Diamond Light Source) , V. Bisogni (National Synchrotron Light Source II) , R. S. Springell (University of Bristol) , M. D'Astuto (Institut de Minéralogie et de Physique des Milieux Condensés (IMPMC), UMR CNRS 7590, Université Pierre et Marie Curie – Case 115) , M. Dantz (Paul Scherrer Institut) , J. Pelliciari (Paul Scherrer Institut) , H. Y. Huang (National Synchrotron Radiation Research Center) , J. Okamoto (National Synchrotron Radiation Research Center) , D. J. Huang (National Synchrotron Radiation Research Center; National Tsing Hua University) , J. P. Hill (National Synchrotron Light Source II) , X. He (Brookhaven National Laboratory; Yale University) , I. Božović (Brookhaven National Laboratory; Yale University) , T. Schmitt (Paul Scherrer Institut) , M. P. M. Dean (Brookhaven National Laboratory)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 95

State: Published (Approved)
Published: February 2017

Abstract: 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 La 2 − x Sr x CuO 4 , 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. 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.

Journal Keywords: Magnons; Cuprates; Antiferromagnetism

Subject Areas: Physics, Materials

Facility: ADRESS at SLS; BL05A1 at NSRRC

Added On: 31/08/2021 11:30

Discipline Tags:

Superconductors Quantum Materials Hard condensed matter - electronic properties Physics Magnetism Materials Science

Technical Tags: