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

Shunsuke Furukawa, Masahiro Sato, Shigeki Onoda

Research output: Contribution to journal › Article › peer-review

99 Citations (Scopus)

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, LiCu₂O₂ and LiCuVO₄. Our realistic semiclassical analyses for LiCu₂O₂ resolve controversies on the helical magnetic structure and unveil the pseudo-Nambu-Goldstone modes as the origin of experimentally observed electromagnons.

Original language	English
Article number	257205
Journal	Physical review letters
Volume	105
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.105.257205
Publication status	Published - 2010 Dec 14
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.105.257205

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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, LiCu2O2 and LiCuVO4. Our realistic semiclassical analyses for LiCu2O2 resolve controversies on the helical magnetic structure and unveil the pseudo-Nambu-Goldstone modes as the origin of experimentally observed electromagnons.",

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AU - Sato, Masahiro

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AB - 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, LiCu2O2 and LiCuVO4. Our realistic semiclassical analyses for LiCu2O2 resolve controversies on the helical magnetic structure and unveil the pseudo-Nambu-Goldstone modes as the origin of experimentally observed electromagnons.

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Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates

Abstract

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