Collective vortex pinning and crossover between second order to first order transition in optimally doped Ba1-xKxBiO3 single crystals

Measurements on magnetization and relaxation have been carried out on an optimally doped Ba$_{0.59}$K$_{0.47}$BiO$_{3+\delta}$ single crystal with $T_c$ = 31.3 K. Detailed analysis is undertaken on the data. Both the dynamical relaxation and conventional relaxation have been measured leading to the...

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Hauptverfasser:	Jiao, Yanjing, Cheng, Wang, Deng, Qiang, Yang, Huan, Wen, Hai-Hu
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Superconductivity
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