Anomalous superconducting properties in the weak-ferromagnetic superconductors RuSr2GdCu2O8 and RuCa 2PrCu2O8

B. C. Chang, C. Y. Yang, Yung-Yuan Hsu, B. N. Lin, H. C. Ku

研究成果: 書貢獻/報告類型會議論文篇章

3 引文 斯高帕斯(Scopus)

摘要

Anomalous superconducting properties are reported through transport, magnetic, and x-ray absorption near-edge spectroscopy (XANES) studies on the weak-ferromagnetic superconductors RuSr2GdCu2O8 and RuCa2PrCu2O8. For RuSr 2GdCu2O8 [Tm = 131 K, resistivity Tc(onset) = 56 K, Tc(zero) = Tc(dia) = 39 K], a spontaneous vortex state above T0 = 30 K and a weak Meissner state below T0 with a lower critical field Bc1(0) = 12 G is observed due to the weak dipole field (∼ 4 G) of the weak-ferromagnetic order. In RuCa2PrCu2O8 (Tm = 47 K, possible Tc = 37 K), an anomalously large field-cooled diamagnetic shielding signal is observed below Tc. Both samples show mixed-valence Ru4/5+ character from XANES data.

原文英語
主出版物標題LOW TEMPERATURE PHYSICS
主出版物子標題24th International Conference on Low Temperature Physics - LT24
頁面677-678
頁數2
850
DOIs
出版狀態已發佈 - 2006 十二月 1
事件LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, 美国
持續時間: 2006 八月 102006 十月 17

其他

其他LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
國家美国
城市Orlando, FL
期間2006/08/102006/10/17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

指紋 深入研究「Anomalous superconducting properties in the weak-ferromagnetic superconductors RuSr<sub>2</sub>GdCu<sub>2</sub>O<sub>8</sub> and RuCa <sub>2</sub>PrCu<sub>2</sub>O<sub>8</sub>」主題。共同形成了獨特的指紋。

引用此