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
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.
引用
收藏
页数:6
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