抄録
We searched for new superconductors using cubic-anvil-type high-pressure apparatus. Samples including valence skip elements such as Bi, Sb were intensively investigated. As a result, we have found new superconductors of LaBi3 and Ba2Bi3 with the superconducting transition temperature (Tc) of 7.3 K and 4.4 K, respectively. We also succeeded in enhancing Tc of Au-Sb alloys and SrBi3 up to 8.1 K and 9.0 K, respectively, by controlling their chemical compositions. In this article, we explain the properties of the superconductors and the research processes that led to the discovery of the new superconductors.
