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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