Abstract
We study the evolution of the neutron cross section with variable frequency and fixed T below in two different cuprate families. Our calculations, which predominantly probe the role of d-wave pairing, lead to generic features, independent of Fermi-surface shapes. Among our findings, reasonably consistent with experiment, are (i) for near the gap energy both optimal and slightly underdoped exhibit (comparably) incommensurate peaks, (ii) peak sharpening below is seen in LaSrCuO, and (iii) quite generically, a frequency evolution from incommensurate to commensurate and then back to incommensurate structure is found with increasing Due to their narrow regime of stability, commensurate peaks in LaSrCuO should be extremely difficult to observe.
- Received 23 August 1999
DOI:https://doi.org/10.1103/PhysRevB.61.R11898
©2000 American Physical Society