Hall effect driven by non-collinear magnetic polarons in diluted magnetic semiconductors

被引:8
作者
Denisov, K. S. [1 ,2 ]
Averkiev, N. S. [1 ]
机构
[1] Ioffe Inst, St Petersburg 194021, Russia
[2] Lappeenranta Univ Technol, FI-53851 Lappeenranta, Finland
基金
俄罗斯科学基金会;
关键词
BERRY PHASE; ROOM-TEMPERATURE; MAGNETORESISTANCE; MULTILAYERS; SKYRMIONS; CHIRALITY;
D O I
10.1063/1.5024831
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this letter, we develop the theory of Hall effect driven by non-collinear magnetic textures (topological Hall effect-THE) in diluted magnetic semiconductors (DMSs). We show that a carrier spin-orbit interaction induces a chiral magnetic ordering inside a bound magnetic polaron (BMP). The inner structure of non-collinear BMP is controlled by the type of spin-orbit coupling, allowing us to create skyrmion-(Rashba) or antiskyrmion-like (Dresselhaus) configurations. The asymmetric scattering of itinerant carriers on polarons leads to the Hall response which exists in weak external magnetic fields and at low temperatures. We point out that DMS-based systems allow one to investigate experimentally the dependence of THE both on a carrier spin polarization and on a non-collinear magnetic texture shape. Published by AIP Publishing.
引用
收藏
页数:5
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