Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet

Details Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet

2006-08-31

arxiv.org/abs/cond-mat/0609002v1

Phys. Rev. B, vol 75, 024417 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.75.024417

Motivated by the achievements of the $X$-ray scattering technique, we analyzed the profile of the light scattering intensity $R(q, \omega)$ 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 $q= q_0 = (0, \pi)$ 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 $R(q_0, \omega)$ is equivalent in $A_{1g}$ and $B_{1g}$ geometries.

Affiliated with

Also associated with

No associations

Rating

Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-492464