Destruction of antinodal state coherence via `checkerboard' charge ordering in strongly underdoped superconducting BSCCO-2212

D.-H. Lee; E. W. Hudson; H. Eisaki; J.C. Davis; J. E. Hoffman; J. Lee; K. McElroy; K. M Lang; S. Uchida

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Destruction of antinodal state coherence via `checkerboard' charge ordering in strongly underdoped superconducting BSCCO-2212

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arxiv cond-mat/0406491 v1 pith:5YF4HQTA submitted 2004-06-21 cond-mat.supr-con

K. McElroy , D.-H. Lee , J. E. Hoffman , K. M Lang , J. Lee , E. W. Hudson , H. Eisaki , S. Uchida

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J.C. Davis

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keywords checkerboardenergysuperconductingaccordinganalyzedantinodalappearsbscco-2212

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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

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