NMR Study on Coexistence of Magnetic Order and Superconductivity in RuSr2GdCu2O8

被引：0
|
作者：
K. Kumagai
S. Takada
Y. Furukawa
机构：
[1] Hokkaido University,Division of Physics, Graduate School of Science
[2] Hokkaido University,Division of Physics, Graduate School of Science
来源：
Hyperfine Interactions | 2001年 / 133卷
关键词：
NMR; weak-ferromagnetic order; antiferromagnetic order; superconductivity; RuSr; GdCu; O;
D O I：
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中图分类号：
学科分类号：
摘要：
Electronic and magnetic properties of RuSr2GdCu2O8 have been investigated by resistivity, magnetization and NMR measurements. Magnetic order (TC=133 K) and superconducting transition (TS(onset) ∼52 K) have been confirmed in RuSr2GdCu2O8. We observed two kinds of Ru-NMR signals (the hyperfine fields of 101Ru are 590 kOe and ∼290 kOe), suggesting a possible charge segregation of Ru4+(S=1) and Ru5+(S=3/2) in the RuO2 layers. Holes can be inherently doped in the CuO2 layers from the (Ru4+, Ru5+)O2 layers, and the superconductivity can occur under weak magnetic interactions between Ru and Cu spins in RuSr2GdCu2O8.
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页码：151 / 156
页数：5
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