Dynamical structure factors of S=1 bond-alternating Heisenberg chains

Details Dynamical structure factors of S=1 bond-alternating Heisenberg chains Dynamical structure factors of S=1 bond-alternating Heisenberg chains

2003-09-08

arxiv.org/abs/cond-mat/0309178v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 3 figures

Scientific paper

10.1103/PhysRevB.68.134429

We calculate the dynamical structural factor of the S=1 bond-alternating Heisenberg chain. In the Haldane phase, the lowest excited states form the lower edge of the multimagnon continuum in $0 \leq q \leq q_c$ and the one-magnon mode in $q_c \leq q \leq \pi$. As the system approaches the gapless point, $q_c$ shifts towards $q=\pi$ and the largest integrated intensity of the one-magnon mode is decreased. In the singlet-dimer phase, the one-magnon mode appears in $0 \leq q \leq q_c$. As the bond-alternation becomes strong, $q_c$ shifts towards $q=\pi$. In the antiferromagnetic-ferromagnetic bond-alternation region with a strong ferromagnetic coupling, the lowest excited states form the lower edge of the multimagnon continuum in $0 \leq q \leq 0.2\pi$ and $0.8\pi \leq q \leq \pi$, and the one-magnon mode appears in $0.2\pi

Affiliated with

Also associated with

No associations

Rating

Dynamical structure factors of S=1 bond-alternating Heisenberg 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 Dynamical structure factors of S=1 bond-alternating Heisenberg chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical structure factors of S=1 bond-alternating Heisenberg chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-47350