English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We discuss ways in which the ratio of exchange constants along the rungs andlegs of a spin-ladder material influences the two-magnon Raman scatteringspectra and hence can be determined from it. We show that within theFleury-Loudon-Elliott approach, the Raman line-shape does not change withpolarization geometries. This lineshape is well known to be difficult tocalculate accurately from theory. However, the Raman scattering intensities dovary with polarization geometries, which are easy to calculate. With someassumptions about the Raman scattering Hamiltonian, the latter can be used toestimate the ratio of exchange constants. We apply these results to Sugai'srecent measurements of Raman scattering from spin-ladder materials such asLa$_6$Ca$_8$Cu$_{24}$O$_{41}$ and Sr$_{14}$Cu$_{24}$O$_{41}$.Comment: 5 pages, revtex. Latest version focuses on ladder materials, with a  detailed examination of the role of Heisenberg-like coupling constants which  appear in the Fleury-Loudon-Elliott scattering operator but are rarely  discussed in the literatur

Two-magnon Raman scattering in spin-ladder geometries and the ratio of rung and leg exchange constants