My own research activities focus on using positive muon beam available at modern high intensity accelerator facilities in Vancouver, Canada and Villigen, Switzerland to study novel and unconventional superconductors. Since the discovery of high-temperature superconductors in 1986, which led to Nobel Prizes to George Bednorz and Alex Mueller in 1987, more than 6000 physicists and materials scientists have been working for more than 30 years to understand the mechanism for high transition temperatures. Yet, there has been no consensus among scientific community in this quest.
At the lecture held at the Paris Center on January 23, 2018, I describe my own approach and contributions, in particular the work known as “Uemura plot” which suggests that the new superconductors are fundamentally different from simple-metal superconductors explained by the Bardeen Cooper Schrieffer (BCS) theory to which the 1972 Nobel Physics Prize was awarded.