Surface-induced Magnetism Fluctuations in Single Crystal of NiBi3 Superconductor
Xiangde Zhu, Hechang Lei, C. Petrovic, and Yuheng Zhang
TL;DR
This study investigates surface-induced magnetic fluctuations in NiBi3 single crystals, revealing surface ferromagnetic fluctuations below 150K despite the absence of bulk magnetic order, with implications for understanding surface effects in superconductors.
Contribution
It uncovers surface ferromagnetic fluctuations in NiBi3 crystals using ESR, contrasting with the absence of bulk magnetic order, highlighting surface effects in superconducting materials.
Findings
Surface ferromagnetic fluctuations exist below 150K.
No bulk long-range magnetic order detected below 300K.
Anisotropic superconducting and normal state properties observed.
Abstract
We report anistropy in superconducting and normal state of NiBi3 single crystals with Tc = 4.06 K. The magnetoresistance results indicate the absence of scattering usually associated with ferromagnetic metals, suggesting the absence of bulk long range magnetic order below 300 K. However, the electron spin resonance results demonstrate that ferromagnetism fluctuations exist on the surface of the crystal below 150K.
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