Ⅰ. INTRODUCTION Bednorz and Müller have discovered possible superconductivity around 35K in Ba-La-Cu-O systems. Uchida and Takagi et al. have observed Meissner effect and determined superconductivity in the syst...Ⅰ. INTRODUCTION Bednorz and Müller have discovered possible superconductivity around 35K in Ba-La-Cu-O systems. Uchida and Takagi et al. have observed Meissner effect and determined superconductivity in the system. Within a few months, several groups have reported their successful results. Chu et al. pushed the T_c(onset) of Ba-La-Cu-O to 52K under hydrostatic pressure. Cava et al. obtained nearly single superconducting phase展开更多
文摘Ⅰ. INTRODUCTION Bednorz and Müller have discovered possible superconductivity around 35K in Ba-La-Cu-O systems. Uchida and Takagi et al. have observed Meissner effect and determined superconductivity in the system. Within a few months, several groups have reported their successful results. Chu et al. pushed the T_c(onset) of Ba-La-Cu-O to 52K under hydrostatic pressure. Cava et al. obtained nearly single superconducting phase
