Structure of intra-unit cell C$_{4v}$ symmetry breaking domains in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ from SI-STM

Mounting evidence from a number of experimental probes supports the idea that the electronic structure of the cuprate pseudogap phase breaks rotational symmetry. Furthermore, ARPES, neutron scattering and spectroscopic imaging scanning tunneling microscopy (SI-STM) data all point to an intra-unit cell origin. We present new findings for near optimally doped Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta }$(BSCCO) which elucidate the domains associated with intra-unit cell C$_{4v}$ symmetry breaking in the electronic structure. The analysis method will be motivated by the preceding talk, `Phase Determination of Intra-Unit Cell Fourier Transform STM -- Picometer Registration of Zn Impurity States in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$' given by I. A. Firmo.