1207.3345 (Xiangde Zhu et al.)

Surface-induced Magnetism Fluctuations in Single Crystal of NiBi3
Superconductor    [PDF]

Xiangde Zhu, Hechang Lei, C. Petrovic, Yuheng Zhang

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.

View original: http://arxiv.org/abs/1207.3345