We argue that the resonant peak observed in neutron scattering experiments on superconducting cuprates and the peak/dip/hump features observed in ARPES measurements are byproducts of the same physical phenomenon: both are due to feedback effects on the damping of spin fluctuations in a d-wave superconductor. We argue that in the superconducting phase, the dynamical spin susceptibility possesses the resonance peak at Ωres ∝ ξ-1 where ξ is the magnetic correlation length. The scattering of the resonant magnetic excitations by electrons gives rise to a peak/dip/hump behavior of the electronic spectral function, the peak-dip separation is exactly Ωres.
|Original language||English (US)|
|Number of pages||5|
|Journal||Physica B: Condensed Matter|
|State||Published - 2000|
|Event||22nd International Conference on Low Temperature Physics (LT-22) - Helsinki, Finland|
Duration: Aug 4 1999 → Aug 11 1999
Bibliographical noteFunding Information:
It is our pleasure to thank G. Blumberg, A. Finkelstein, R. Joynt, G. Kotliar, A. Millis, D. Morr, M. Norman, D. Pines and J. Schmalian for useful conversations. The research was supported by NSF DMR-9629839.
- Neutron scattering