Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet

Simple item page
dc.creatorDonkov, A.
dc.creatorChubukov, A. V.
dc.date2006-08-31
dc.date.accessioned2026-07-07T08:22:49Z
dc.date.available2026-07-07T08:22:49Z
dc.descriptionMotivated by the achievements of the $X$-ray scattering technique, we analyzed the profile of the light scattering intensity $R(q, ω)$ at a finite $q$ in a 2D Heisenberg antiferromagnet. Previous Raman scattering studies at $q=0$ identified the two-magnon peak in $B_{1g}$ scattering geometry. We found that the $B_{1g}$ peak disperses downwards at a finite $q$, and its intensity increases, reaching its maximum at $q= q_0 = (0, π)$ and symmetry related points. In addition, the intensity in the $A_{1g}$ geometry becomes non-zero at a finite $q$, and also displays a two-magnon peak which gains strength and disperses to larger frequencies with increasing $q$, and reaches its highest intensity at $q_0$. We found that the profile of $R(q_0, ω)$ is equivalent in $A_{1g}$ and $B_{1g}$ geometries.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0609002
dc.identifierhttp://arxiv.org/abs/cond-mat/0609002
dc.identifierPhys. Rev. B, vol 75, 024417 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.024417
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135782
dc.subjectStrongly Correlated Electrons
dc.titleMomentum-dependent light scattering in a 2D Heisenberg antiferromagnet
dc.typetext

Files

Collections

arXiv