Superconductivity and magnetism on flux-grown single crystals of NiBi3

Article

关键词: HEAVY-FERMION SUPERCONDUCTIVITY;    DISORDERED SUPERCONDUCTORS;    PAIR-BREAKING;    TEMPERATURE;    COEXISTENCE;    IMPURITIES;    STATE;    ERNI2B2C;    ERRH4B4;    NICKEL;   

DOI  :  10.1103/PhysRevB.88.184508

来源: SCIE

【 摘 要 】

We present resistivity, magnetization, and specific-heat measurements on flux-grown single crystals of NiBi3. We find typical behavior of a type-II superconductor, with, however, a sizable magnetic signal in the superconducting phase. There is a hysteretic magnetization characteristic of a ferromagnetic compound. By following the magnetization as a function of temperature, we find a drop at temperatures corresponding to the Curie temperature of ferromagnetic amorphous Ni. Thus, we assign the magnetism in NiBi3 crystals to amorphous Ni impurities.

【 授权许可】

Free