Coincidence of checkerboard charge order and antinodal state decoherence in strongly underdoped superconducting Bi2Sr2CaCu2O8+δ

K. Mcelroy, D. H. Lee, J. E. Hoffman, K. M. Lang, J. Lee, E. W. Hudson, H. Eisaki, S. Uchida, J. C. Davis

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Abstract

The doping dependence of nanoscale electronic structure in superconducting Bi2Sr2CaCu2O8+δ is studied by scanning tunneling microscopy. 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 ordering of high energy states, with a wave vector of Q→=(±2π/4.5a0,0); (0,±2π/4.5a0) ±15%. Surprisingly, this spatial ordering of high energy states coexists harmoniously with the low energy Bogoliubov quasiparticle states.

Original languageEnglish (US)
Article number197005
JournalPhysical Review Letters
Volume94
Issue number19
DOIs
StatePublished - May 20 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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