This book presents state-of-the art research on superconductivity which is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense, world-wide, research effort during this time, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such qstrongly correlatedq solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic.See Figure 5.1 which shows a schematic of the setup for experiment 1 . ... from vaporization of the liquid nitrogen then followed by natural warming, was recorded with a Sony Handicam video camera model DCRTRV 19 (small camera ) and theanbsp;...
|Title||:||Progress in Superconductivity Research|
|Author||:||Oliver A. Chang|
|Publisher||:||Nova Publishers - 2008|