Commensurate and Incommensurate Structure of the Neutron Cross Section in LaSrCuO and YBaCuO
Ying-Jer Kao, Qimiao Si, K. Levin
Abstract
We study the evolution of the d-wave neutron cross-section with variable frequency ωand fixed T (below and above Tc) in two different cuprate families. The evolution from incommensurate to commensurate to incommensurate peaks is rather generic within an RPA-like scheme. This behavior seems to be in reasonable accord with experiments, and may help distinguish between this and the "stripe" scenario.
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