Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates

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-12 chain relevant to multiferroic cuprates, LiCu 2 O 2 and LiCuVO 4 . Our realistic semiclassical analyses for LiCu 2 O 2 resolve controversies on the helical magnetic structure and unveil the pseudo-Nambu-Goldstone modes as the origin of experimentally observed electromagnons.

Original languageEnglish
Article number257205
JournalPhysical Review Letters
Volume105
Issue number25
DOIs
Publication statusPublished - 2010 Dec 14
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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