Nuclear Magnetic Resonance in Atomic-Scale Superconductor/Magnet Multilayered Systems (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We investigate the nuclear spin-lattice relaxation rate (T_1T)^<-1> in atomic-scale superconductor/magnet multilayered systems and discuss the discrepancy between two recent (T_1T)^<-1> experiments on Ru in RuSr_2YCu_2O_8. When the magnetic layers are in the antiferromagnetic state, (T_1T)^<-1> in the magnetic layers is shown to decrease with decreasing temperature due to the excitation gap associated with the magnetic ordering. The proximity effect of superconductivity on (T_1T)^<-1> in the magnetic layer is negligibly small. Our result indicates that the temperature dependence of (T_1T)^<-1> on Ru in RuSr_2YCu_2O_8 likely originates from the antiferromagnetism in the RuC_2 layers, but not from the superconductivity in the CuO_2 layers.
- 社団法人日本物理学会の論文
- 2003-07-15
著者
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Ohashi Yoji
Institute Of Physics University Of Tsukuba
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Kanegae Y
Mechanical Engineering Research Laboratory Hitachi Ltd.
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Kanegae Yoshiharu
Institute Of Physics University Of Tsukuba
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Ohashi Yoji
Institute Of Physics University Of Tsukuba:department Of Physics University Of Toronto
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