Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates

Shunsuke Furukawa; Masahiro Sato; Shigeki Onoda

doi:10.1103/PhysRevLett.105.257205

Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates

Strongly Correlated Electrons 2015-05-18 v2

Authors: Shunsuke Furukawa , Masahiro Sato , Shigeki Onoda

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Abstract

We show by unbiased numerical calculations that the ferromagnetic nearest-neighbor exchange interaction stabilizes a vector spin chiral order against the quantum fluctuation in a frustrated spin-1/2 chain relevant to multiferroic cuprates, LiCu2O2 and LiCuVO4. Our realistic semi-classical analyses for LiCu2O2 resolve controversies on the helical magnetic structure and unveil the pseudo-Nambu-Goldstone modes as the origin of experimentally observed electromagnons.

Keywords

charge ordering frustrated magnetism magnetism

Cite

@article{arxiv.1003.3940,
  title  = {Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates},
  author = {Shunsuke Furukawa and Masahiro Sato and Shigeki Onoda},
  journal= {arXiv preprint arXiv:1003.3940},
  year   = {2015}
}

Comments

4 pages including 3 figures (main text); 7 pages including 4 figures and 1 table (supplement); accepted for publication in Phys. Rev. Lett

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