Doping dependence of the magnetic excitations in
Journal Article
·
· Physical Review B
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Diamond Light Source, Ltd., Oxfordshire (United Kingdom)
- Univ. of Bristol, Bristol (United Kingdom)
- Univ. Pierre et Marie Curie - Case 115, Paris Cedex 05 (France)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
- National Synchrotron Radiation Research Center, Hsinchu (Taiwan); National Tsing Hua Univ., Hsinchu (Taiwan)
- 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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