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A quantum hydrodynamical model of skyrmions with electrical dipole moments and novel magneto-electric skyrmion Hall effect
Progress of Theoretical and Experimental Physics Pub Date : 2020-04-30 , DOI: 10.1093/ptep/ptaa036
Mariya Iv. Trukhanova 1, 2 , Pavel Andreev 1
Affiliation  

To introduce novel ways of manipulating the skyrmion dynamics we need to develop new fundamental models. Many-particle quantum hydrodynamics allows us to study inter-skyrmion interactions in the approximation of point-particle skyrmions, which were discovered in multiferroic insulators, where the spiral magnetic structure is accompanied by a finite electric dipole moment. We propose a new model of many-particle quantum hydrodynamics for dipolar skyrmions with dipole–dipole interaction, in the presence of electric and magnetic field gradients. Based on the developed model we find a new way to control the positions of skyrmions, using the crossed gradients of magnetic and electric fields or a novel magneto-electric Hall effect. We have shown that the influence of non-uniform magnetic field provides circular motion of the dipolar skyrmion in the plane with the frequency determined by the derivative of the external magnetic field and the amplitude of the dipole moment. We study the wave processes in the system of skyrmions. We investigate hydrodynamic waves in a skyrmion gas in crossed non-uniform electric and magnetic fields, and predict the generation of a new type of hydrodynamic waves and instabilities. Also, we predict a new type of polarization waves in a rigid skyrmion gas with the dipole–dipole interaction.

中文翻译:

具有电偶极矩和新型磁电天窗霍尔效应的天窗离子的量子流体力学模型

要介绍操纵天体离子动力学的新颖方法,我们需要开发新的基本模型。多粒子量子流体力学使我们能够研究点粒子天生离子近似中的天生离子相互作用,这是在多铁性绝缘子中发现的,螺旋铁结构伴随有有限的电偶极矩。在电场和磁场梯度存在的情况下,我们提出了一种具有偶极-偶极相互作用的偶极天生离子的多粒子量子流体动力学新模型。基于已开发的模型,我们发现了一种使用磁场和电场的交叉梯度或新颖的磁电霍尔效应来控制天体离子位置的新方法。我们已经表明,非均匀磁场的影响使偶极天rm在平面中的圆周运动具有由外部磁场导数和偶极矩振幅确定的频率。我们研究了天体离子系统中的波浪过程。我们研究了在交叉不均匀电场和磁场中天rm气体中的水动力波,并预测了新型水动力波和不稳定性的产生。同样,我们预测了具有偶极-偶极相互作用的刚性天rm气体中的新型极化波。我们研究了在交叉不均匀电场和磁场中天rm气体中的水动力波,并预测了新型水动力波和不稳定性的产生。同样,我们预测了具有偶极-偶极相互作用的刚性天rm气体中的新型极化波。我们研究了在交叉不均匀电场和磁场中天rm气体中的水动力波,并预测了新型水动力波和不稳定性的产生。同样,我们预测了具有偶极-偶极相互作用的刚性天rm气体中的新型极化波。
更新日期:2020-04-30
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