NMR Study on Coexistence of Magnetic Order and Superconductivity in RuSr2GdCu2O8期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

NMR Study on Coexistence of Magnetic Order and Superconductivity in RuSr2GdCu2O8

Authors:	K. Kumagai S. Takada Y. Furukawa

Affiliation:	(1) Division of Physics, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan;(2) Division of Physics, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan

Abstract:	Electronic and magnetic properties of RuSr₂GdCu₂O₈ have been investigated by resistivity, magnetization and NMR measurements. Magnetic order (T_C=133 K) and superconducting transition (T_S(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.

Keywords:	NMR weak-ferromagnetic order antiferromagnetic order superconductivity RuSr₂GdCu₂O₈
本文献已被 SpringerLink 等数据库收录！