期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.147001
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资金
- Center for Emergent Superconductivity, an Energy Frontier Research Center
- U.S. DOE (Department of Energy), Office of Basic Energy Sciences
- Office of Basic Energy Sciences, Division of Materials Science and Engineering, U.S. DOE [DEAC02-98CH10886]
- Swiss National Science Foundation
- NCCR MaNEP
- U.S. DOE [DE-AC02-98CH10886]
We investigate the high-energy magnetic excitation spectrum of the high-T-c cuprate superconductor Bi2Sr2CaCu2O8+delta (Bi-2212) using Cu L-3 edge resonant inelastic x-ray scattering. Broad, dispersive magnetic excitations are observed, with a zone boundary energy of similar to 300 meV and a weak dependence on doping. These excitations are strikingly similar to the bosons proposed to explain the high-energy kink observed in photoemission. A phenomenological calculation of the spin response, based on a parametrization of the the angle-resolved photoemission spectroscopy derived electronic structure and Yang-Rice-Zhang quasiparticles, provides a reasonable prediction of the energy dispersion of the observed magnetic excitations. These results indicate a possible unified framework to reconcile the magnetic and electronic properties of the cuprates and we discuss the advantages and disadvantages of such an approach. DOI: 10.1103/PhysRevLett.110.147001
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