Quasi-Static Internal Magnetic Field Detected in the Pseudogap Phase of Bi${}_{2+x}$Sr${}_{2-x}$CaCu${}_2$O${}_{8+\delta }$ by $\mu$SR

A. Pal, S. R. Dunsiger, K. Akintola +5

We report muon spin relaxation ($\mu$SR) measurements of optimally-doped and overdoped Bi${}_{2+x}$Sr${}_{2-x}$CaCu${}_2$O${}_{8+\delta }$ (Bi2212) single crystals that reveal the presence of a we…