Two-magnon Raman scattering in spin-ladders with exact singlet-rung ground state
Strongly Correlated Electrons
2009-11-10 v2
Abstract
We suggest a family of spin-ladder models with exact singlet-rung vacuum. In addition to the terms describing interactions along legs and rungs the Hamiltonian has frustration and cyclic terms. Using coordinate Bethe ansatze all one- and two-dimensional states are constructed. The explicit formula for zero-temperature Raman scattering cross section is derived. The corresponding line-shapes are strongly asymmetric and have no more than one van-Hove singularity. The results are in good agreement with experimental data.
Cite
@article{arxiv.cond-mat/0411700,
title = {Two-magnon Raman scattering in spin-ladders with exact singlet-rung ground state},
author = {P. N. Bibikov},
journal= {arXiv preprint arXiv:cond-mat/0411700},
year = {2009}
}
Comments
10 pages, 1 figure