Magnetic dimensional crossover in Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ

H. C. Ku*, C. Y. Lin, Y. Y. Hsu, X. G. Li, X. F. Sun


研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)


Magnetic hysteresis measurements on Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H2D for field applied parallel to the c-axis decreases from 6 kG at 5 K to 410 G at 25 K and 120 G at 45 K. The substitution of 11% of magnetic Pr3- ions for Ca2- ions effectively decreases the hole concentration on the CuO2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature Tc. of 88 K. The lower crossover field H2D values of the Pr-doped sample as compared with the undoped Bi2Sr2CaCu2O8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO2 bi-layers can be reduced by the presence of Pr.

頁(從 - 到)550-551
期刊Physica B: Condensed Matter
出版狀態已發佈 - 1999

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程


深入研究「Magnetic dimensional crossover in Pr-doped single crystal Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>0.89</sub>Pr<sub>0.11</sub>Cu <sub>2</sub>O<sub>8+δ</sub>」主題。共同形成了獨特的指紋。