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National Chung Hsing University Institutional Repository - NCHUIR > 理學院 > 物理學系所 > 依資料類型分類 > 期刊論文 >  Coexistence of superconductivity and magnetism in the La(0.87-x)Ln(x)Sr(0.13)FeAsO (Ln=Sm, Gd, Dy) system

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/126749

標題: Coexistence of superconductivity and magnetism in the La(0.87-x)Ln(x)Sr(0.13)FeAsO (Ln=Sm, Gd, Dy) system
作者: T.P.Lu;C.C.Wu;W.H.Chou;M.D.Lan
Contributors: 國立中興大學物理學系
National Chung Hsing University,Department of Physics
Miao-zhen Luo
關鍵字: Hole-doped superconductor;Iron-based superconductor;Paramagnetic;Spin;density wave
日期: 2011-5
Issue Date: 2012-10-26 14:32:02 (UTC+8)
摘要: The interplay between the superconducting phase and spin density wave order phase was studied. We report the magnetic and superconducting properties of the hole-doped FeAs-based superconducting compound La(0.87-x)Ln(x)Sr(0.13)FeAsO (Ln=Sm, Gd, Dy; 0 <= x <= 0.06). Both resistivity and magnetic susceptibility measurements show that the superconducting transition temperature decreases with increase in composition of magnetic ions. The hysteresis loop of the La(0.87-x)Ln(x)Sr(0.13)FeAsO sample shows a superconducting hysteresis in addition to a paramagnetic background. The experiment demonstrates that the magnetism and superconductivity coexist in hole-doped FeAs-based superconducting compounds. Among these three magnetic rare-earth elements, the influence of Dy(3+) doping on superconductivity is more evident than that of Gd(3+) doping, while the influence of Sm(3+) doping is the weakest. The trend is consistent with the variation of the lattice parameter along c-axis. (C) 2010 Elsevier Ltd. All rights reserved.
Relation: Journal of Physics and Chemistry of Solids, Volume 72, Issue 5, Page(s) 442-444.
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