Electron spin resonance study of mixed Bi2Se3 topological insulator-magnetic insulator nanoparticles

被引：2
作者：
Lee, Kyu Won [1 ]
Lee, Yeo Jin [1 ]
Lee, Cheol Eui [1 ]
机构：
[1] Korea Univ, Phys, Seoul 02841, South Korea
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2023年 / 182卷
基金：
新加坡国家研究基金会;
关键词：
Bi2Se3; nanoparticles; Electron spin resonance; Magnetic proximity effect; Topological insulator; TEMPERATURE; PHASE;
D O I：
10.1016/j.jpcs.2023.111554
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We investigated Bi2Se3 topological insulator nanoparticles mixed with room-temperature ferromagnetic in-sulator nanoparticles by using electron spin resonance (ESR) of the surface conduction electrons in the Bi2Se3 nanoparticles. The ESR intensity and linewidth as a function of the molar ratio of the magnetic insulator could be well understood in terms of the magnetic proximity effect due to the short-range exchange field of the magnetic insulator nanoparticles along with the long-range magnetic dipole field effect and the surface-to-volume ratio effect.
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页数：6
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