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Surface-induced magnetic fluctuations in a single-crystal NiBi_3 superconductor

机译:NiBi_3单晶超导体中的表面感应磁涨落

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摘要

We report anistropy in a superconducting and normal state of NiBi_3 single crystals with T_c = 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 150 K.
机译:我们报告了在超导态和正常态下具有T_c = 4.06 K的NiBi_3单晶的各向异性。磁致电阻结果表明,通常不存在与铁磁金属相关的散射,这表明不存在低于300 K的大范围长程磁阶。但是,电子自旋共振结果表明,低于150 K的晶体表面存在铁磁性波动。

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