期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 76, 期 7, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.76.073702
关键词
multiferroics; CuFeO2; spiral magnet; proper screw; cycloid; delafossite; ferroelectricity
A novel type of magnetic origin of ferroelectric polarization is proposed. In crystals with triclinic, monoclinic, or trigonal (rhombohedral) symmetries, the proper screw type of magnetic ordefing can induce ferroelectricity through the variation in the metal-ligand hybridization with spin-orbit coupling. The ferroelectric polarization in delafossite compounds Cu(Fe,Al)O-2 is successfully explained by the mechanism. The relation
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