Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-10-22
Phys. Rev. Lett. 88, 257002 (2002)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, no figure
Scientific paper
10.1103/PhysRevLett.88.257002
In certain cuprates, a spin 1 resonance mode is prominent in the magnetic structure measured by neutron scattering. It has been proposed that this mode is responsible for significant features seen in other spectroscopies, such as photoemission and optical absorption, which are sensitive to the charge dynamics, and even that this mode is the boson responsibile for ``mediating'' the superconducting pairing. We show that its small (measured) intensity and weak coupling to electron-hole pairs (as deduced from the measured lifetime) disqualifies the resonant mode from either proposed role.
Aeppli Gabriel
Kee Hae-Young
Kivelson Steven A.
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