Ruthenocuprates RuSr2(Eu,Ce)(2)Cu2O10-y: Intrinsic magnetic multilayers

Article

关键词: FERROMAGNETIC SUPERCONDUCTOR RUSR2GDCU2O8;    COEXISTENCE;    HYSTERESIS;    FILMS;    GD;    PEROVSKITE;    TRANSITION;    ANISOTROPY;    REVERSAL;   

DOI  :  10.1103/PhysRevB.65.144420

来源: SCIE

【 摘 要 】

We report ac susceptibility data on RuSr2(Eu,Ce)(2)Cu2O10-y (Ru-1222, Ce content x=0.5 and 1.0), RuSr2GdCu2O8 (Ru-1212), and SrRuO3. Both Ru-1222 (x=0.5, 1.0) sample types exhibit unexpected magnetic dynamics in low magnetic fields: logarithmic time relaxation, switching behavior, and inverted hysteresis loops. Neither Ru-1212 nor SrRuO3 exhibit such magnetic dynamics. The results are interpreted as evidence of the complex magnetic order in Ru-1222. We propose a specific multilayer model to explain the data, and note that superconductivity in the ruthenocuprate is compatible with both the presence and absence of the magnetic dynamics.

【 授权许可】

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