Nuclear magnetic resonance in atomic-scale superconductor/magnet multilayered systems

Yoshiharu Kanegae; Yoji Ohashi

doi:10.1143/JPSJ.72.1631

Nuclear magnetic resonance in atomic-scale superconductor/magnet multilayered systems

Yoshiharu Kanegae, Yoji Ohashi

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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 (T₁T) ^-1 experiments on Ru in RuSr₂YCu₂O₈. 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 (T₁T) ^-1 in the magnetic layer is negligibly small. Our result indicates that the temperature dependence of (T₁T)^-1 on Ru in RuSr₂YCu₂O₈ likely originates from the antiferromagnetism in the RuO₂ layers, but not from the superconductivity in the CuO₂ layers.

Original language	English
Pages (from-to)	1631-1634
Number of pages	4
Journal	Journal of the Physical Society of Japan
Volume	72
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.72.1631
Publication status	Published - 2003 Jul 1
Externally published	Yes

Keywords

High-T superconductivity
Nuclear spin-lattice relaxation rate
RuSrYCuO

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.72.1631

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abstract = "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 (T1T) -1 experiments on Ru in RuSr2YCu2O8. 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 (T1T) -1 in the magnetic layer is negligibly small. Our result indicates that the temperature dependence of (T1T)-1 on Ru in RuSr2YCu2O8 likely originates from the antiferromagnetism in the RuO2 layers, but not from the superconductivity in the CuO2 layers.",

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AU - Ohashi, Yoji

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N2 - 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 (T1T) -1 experiments on Ru in RuSr2YCu2O8. 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 (T1T) -1 in the magnetic layer is negligibly small. Our result indicates that the temperature dependence of (T1T)-1 on Ru in RuSr2YCu2O8 likely originates from the antiferromagnetism in the RuO2 layers, but not from the superconductivity in the CuO2 layers.

AB - 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 (T1T) -1 experiments on Ru in RuSr2YCu2O8. 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 (T1T) -1 in the magnetic layer is negligibly small. Our result indicates that the temperature dependence of (T1T)-1 on Ru in RuSr2YCu2O8 likely originates from the antiferromagnetism in the RuO2 layers, but not from the superconductivity in the CuO2 layers.

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Nuclear magnetic resonance in atomic-scale superconductor/magnet multilayered systems

Abstract

Keywords

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