Destruction of antinodal state coherence via `checkerboard' charge   ordering in strongly underdoped superconducting BSCCO-2212
  Microscopy (STM). At all dopings, the low energy density-of-states modulations are analyzed according to a simple model of quasiparticle interference and found to be consistent with Fermi-arc superconductivity. The superconducting coherence-peaks, ubiquitous in near-optimal tunneling spectra, are destroyed with strong underdoping and a new spectral type appears. Exclusively in regions exhibiting this new spectrum, we find local `checkerboard' charge-order with wavevector Q=(2pi/4.5a,0);(0,2pi/4.5a)+15%. Surprisingly, this order coexists harmoniously with the the low energy 
K. McElroy, D.-H. Lee, J. E. Hoffman, K. M Lang, J. Lee, E. W. Hudson,   H. Eisaki, S. Uchida, J.C. Davis