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Spin chirality and electric polarization in multiferroic compounds RMn$$_2$$O$$_5$$ ($$R$$ = Ho, Er)

マルチフェロ物質RMn$$_2$$O$$_5$$($$R$$ = Ho, Er)のスピンカイラリティと分極の相関

脇本 秀一; 木村 宏之*; 福永 守*; 西畑 敬介*; 武田 全康; 加倉井 和久; 野田 幸男*; 十倉 好紀*

Wakimoto, Shuichi; Kimura, Hiroyuki*; Fukunaga, Mamoru*; Nishihata, Keisuke*; Takeda, Masayasu; Kakurai, Kazuhisa; Noda, Yukio*; Tokura, Yoshinori*

Polarized neutron scattering experiments under electric field in the commensurate phase of HoMn$$_2$$O$$_5$$ and ErMn$$_2$$O$$_5$$ have been performed to study the direct relation between the electric polarization and the magnetic chirality $$S_i times S_j$$. It is found that, after cooling in electric fields down to temperatures where the system has both commensurate magnetic order and ferroelectricity, the magnetic chirality is proportional to the polarization.

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パーセンタイル:76.39

分野:Physics, Condensed Matter

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