Excitation Spectrum of $S=1$ Antiferromagnetic Chains

Details Excitation Spectrum of $S=1$ Antiferromagnetic Chains Excitation Spectrum of $S=1$ Antiferromagnetic Chains

1994-04-13

arxiv.org/abs/cond-mat/9404032v1

Physics

Condensed Matter

14pages, Revtex 3.0, No.2792

Scientific paper

10.1103/PhysRevB.50.3045

The dynamical structure factor $S(Q,\omega)$ of the $S=1$ antiferromagnetic Heisenberg chain with length 20 at zero temperature is calculated. The lowest energy states have the delta-function peak at the region $\pi\ge \vert Q\vert >0.3\pi$. At $\vert Q\vert<0.3\pi$ the lowest energy states are the lower-edge of the continuum of the scattering state, the strength of which decreases for large systems. This gives a reasonable explanation for the experimental fact that no clear peak is observed at the region $Q<0.3\pi$. This situation is more apparent for valence-bond solid state. On the contrary for $S=1/2$ antiferromagnetic Heisenberg chain the lowest energy states are always the edge of the continuum.

Affiliated with

Also associated with

No associations

Rating

Excitation Spectrum of $S=1$ Antiferromagnetic Chains 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 Excitation Spectrum of $S=1$ Antiferromagnetic Chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Excitation Spectrum of $S=1$ Antiferromagnetic Chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-441167