Flop of electric polarization driven by the flop of the Mn spin cycloid in multiferroic TbMnO3.
Flop of electric polarization driven by the flop of the Mn spin cycloid in multiferroic TbMnO3.
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多铁性 TbMnO3 中 Mn 自旋摆线的翻转驱动电极化的翻转。
DOI：
10.1103/physrevlett.102.207205
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发表时间：
2009
影响因子：
8.6
通讯作者：
D. Argyriou
中科院分区：
文献类型：
--
作者：
N. Aliouane;Karin Schmalzl;D. Senff;A. Maljuk;Karel Prokes;Markus Braden;D. Argyriou
用场中单晶中子衍射法测定了TbMnO(3)在高场P平行a相中的磁结构。我们明确地证明，铁电极化是由自旋在ab平面上旋转的摆线Mn自旋有序引起的。我们的结果直接证明了TbMnO(3)在外加磁场作用下的铁电极化翻转是由Mn摆线面上的翻转引起的。
Using in-field single-crystal neutron diffraction, we have determined the magnetic structure of TbMnO(3) in the high field P parallel a phase. We unambiguously establish that the ferroelectric polarization arises from a cycloidal Mn spin ordering, with spins rotating in the ab plane. Our results demonstrate directly that the flop of the ferroelectric polarization in TbMnO(3) with applied magnetic field is caused from the flop of the Mn cycloidal plane.