摘要
High T<sub>c</sub> superconductivity has recently been discoveredt. The results obtained in our laboratory and reported here confirm high-temperature superconductivity in Y-Ba-Cu-O system and further present some preliminary results of far infrared absorption spectra of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> and YBaCu<sub>2</sub>O<sub>x</sub> at room temperature and liquid ni-
基金
Project supported by the National Natural Science Foundation of China.
