教師資料查詢 | 類別: 期刊論文 | 教師: 林大欽 LING, DAH-CHIN (瀏覽個人網頁)

標題:Anomalous Zn- and Ni-substitution effects on superconductivity in the superconducting weak ferromagnets RuSr2RCu2O8 (R = Gd, Eu)
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出版(發表)日期2010/12/01
作品名稱Anomalous Zn- and Ni-substitution effects on superconductivity in the superconducting weak ferromagnets RuSr2RCu2O8 (R = Gd, Eu)
作品名稱(其他語言)
著者Ling, D.C.; Wu, S.L.; Lin, M.H.; Chien, F.Z.
單位淡江大學物理學系
出版者Amsterdam: Elsevier BV * North-Holland
著錄名稱、卷期、頁數Physica C: Superconductivity 470(1), pp.S99–S100
摘要The effect of magnetic Ni and non-magnetic Zn impurities on superconducting transition temperature Tc in RuSr2R(Cu1−x(Ni, Zn)x)2O8 with R = Gd or Eu (Ni- and Zn-substituted Ru1212Gd(Eu)) was extensively studied. It is found that the suppression rate dTc/dx of RuSr2R(Cu1−x(Ni, Zn)x)2O8 is comparable to that of underdoped YBa2(Cu1−x(Ni, Zn)x)3O7−δ. The suppression of superconductivity in Ni-substituted Ru1212Eu samples is more significant than that in Zn-substituted ones, indicative of Ni being a more effective pair-breaker than Zn. In strong contrast, the magnetic Ni impurity atoms have a weaker effect on superconductivity than non-magnetic Zn atoms in Ru1212Gd, similar to what was observed in the high-Tc cuprates. These intriguing findings strongly suggest that the impurity-induced local disturbance of the 3d-spin correlation at Cu sites around Ni/Zn is distinctly different between Ru1212Gd and Ru1212Eu.
關鍵字Impurity-induced Tc suppression; Ruthenocuprate; Superconducting weak ferromagnet
語言英文
ISSN0921-4534
期刊性質國外
收錄於SCI
產學合作
通訊作者Ling, D.C.
審稿制度
國別荷蘭
公開徵稿
出版型式紙本
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