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

doi:10.21203/rs.3.rs-2074652/v1

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

https://doi.org/10.21203/rs.3.rs-2074652/v1

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We investigated Bi₂Se₃ topological insulator nanoparticles mixed with room-temperature ferromagnetic insulator 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 show the room temperature 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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Electron spin resonance study of mixed Bi₂Se₃ topological insulator-magnetic insulator nanoparticles

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