Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria.
Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia.
Phys Rev Lett. 2013 Nov 27;111(22):227201. doi: 10.1103/PhysRevLett.111.227201. Epub 2013 Nov 25.
All-electrical control of a dynamic magnetoelectric effect is demonstrated in a classical multiferroic manganite DyMnO3, a material containing coupled antiferromagnetic and ferroelectric orders. Because of intrinsic magnetoelectric coupling with electromagnons a linearly polarized terahertz light rotates upon passing through the sample. The amplitude and the direction of the polarization rotation are defined by the orientation of ferroelectric domains and can be switched by static voltage. These experiments allow the terahertz polarization to be tuned using the dynamic magnetoelectric effect.
在包含耦合反铁磁和铁电序的经典多铁性锰氧化物 DyMnO3 中，展示了动态磁电效应的全电控制。由于与电磁子的固有磁电耦合，线性偏振太赫兹光在穿过样品时会发生旋转。偏振旋转的幅度和方向由铁电畴的取向决定，并可以通过静态电压切换。这些实验允许使用动态磁电效应来调整太赫兹偏振。
