Influence of Europium Doping on Magnetic Properties of 3D Topological Semimetal Cd3As2 from ESR Data

被引：7
|
作者：
Goryunov, Yu. V. [1 ]
Nateprov, A. N. [2 ]
机构：
[1] Kazan EK Zavoisky Phys Tech Inst, Kazan 420029, Tatarstan, Russia
[2] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova
来源：
PHYSICS OF THE SOLID STATE | 2018年 / 60卷 / 01期
关键词：
CRYSTAL-STRUCTURE; RESONANCE; EXCHANGE; STATE;
D O I：
10.1134/S1063783418010109
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Influence of weak doping by rare-earth elements on magnetic and transport properties of a 3D topological semimetal Cd3As2 was studied experimentally. In particular, the doping by europium causes to change of the magnetoresistance sign from positive to negative. First measurements of electron spin resonance and magnetic susceptibility have shown that there are two types of Eu2+ magnetic ions that occupy the positions of cadmium ions and tetrahedral vacancies and form the ferromagnetic and antiferromagnetic phases, respectively. These facts give an evidence of small-scaled phase separation and a transformation of the Dirac semimetal to a Weyl semimetal induced by magnetic impurities.
引用
收藏
页码：68 / 74
页数：7
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