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Magnetic Skyrmionic Polarons
Nano Letters ( IF 9.6 ) Pub Date : 2017-11-01 00:00:00 , DOI: 10.1021/acs.nanolett.7b03082
Luis Brey 1
Affiliation  

We study a two-dimensional electron gas exchange coupled to a system of classical magnetic ions. For large Rashba spin–orbit coupling, a single electron can become self-trapped in a skyrmion spin texture self-induced in the magnetic ions system. This new quasiparticle carries electrical and topological charge as well as a large spin, and we named it as magnetic skyrmionic polaron. We study a range of parameters; temperature, exchange coupling, Rashba coupling, and magnetic field, for which the magnetic skyrmionic polaron is the fundamental state in the system. The dynamics of this quasiparticle is studied using the collective coordinate approximation, and we obtain that in the presence of an electric field the new quasiparticle shows, due to the chirality of the skyrmion, a Hall effect. Finally, we argue that the magnetic skyrmionic polarons can be found in large Rashba spin–orbit coupling semiconductors as GeMnTe.

中文翻译:

磁性天体离子极化子

我们研究了与经典磁离子系统耦合的二维电子气交换。对于大型Rashba自旋-轨道耦合,单个电子可以自陷于在磁离子系统中自感应的天胶自旋结构中。这种新的准粒子带有电荷和拓扑电荷,并且具有大的自旋,因此我们将其命名为磁性天体离子极化子。我们研究了一系列参数;温度,交换耦合,Rashba耦合和磁场,天性离子的磁性极化子是系统中的基本状态。使用集合坐标近似法研究了这种准粒子的动力学,并且我们发现,在存在电场的情况下,由于天the子的手性,新的准粒子显示出霍尔效应。最后,
更新日期:2017-11-01
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