Observation of room-temperature spontaneous phase segregation in overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O$_{8+x}

X. S. Wu, L. Lu, D. L. Zhang +2

The occurrence and development of phase inhomogeneity in {\rm Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$} single crystals have been investigated by measuring their superconducting transition pa…