期刊
PHYSICAL REVIEW B
卷 81, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.064518
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资金
- DOE [DE-AC02-76SF00515]
- NSF [DMR-0705086]
- Alexander von Humboldt Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1036261] Funding Source: National Science Foundation
Inelastic neutron-scattering measurements of single-CuO2-layer HgBa2CuO4+delta reveal an antiferromagnetic resonance with energy omega(r) = 56 meV (approximate to 6.8k(B)T(c)) below the superconducting transition temperature T-c approximate to 96 K. The resonance is energy-resolution limited and exhibits an intrinsic momentum width of about 0.2 angstrom(-1), consistent with prior work on several other cuprates. The rather large value of omega(r) is identical to the characteristic energy of the electron-boson spectral density obtained from recent optical conductivity work, consistent with the notion that the charge carriers are strongly coupled to magnetic fluctuations.
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