Supplementary information
From the following article:
A 'checkerboard' electronic crystal state in lightly hole-doped Ca2-xNaxCuO2Cl2
T. Hanaguri, C. Lupien, Y. Kohsaka, D.-H. Lee, M. Azuma, M. Takano, H. Takagi & J. C. Davis
Nature 430, 1001-1005(26 August 2004)
doi:10.1038/nature02861
Supplementary Figure 1
Doping dependence of the spectra from x = 0.08 to 0.12.
Supplementary Figure 2
Topography and associated Fourier transform showing the existence of 1/4 and 3/4 signal in topographic signal.
Supplementary Figure 3
Raw spectra and averages from the white and red points of Fig. 3b from the main text.
Supplementary Figure 4
Doping dependence of the low temperature resistivity from x = 0.06 to 0.10.
Supplementary Figure 5
Low energy spectra along a line cut showing heterogeneous features possibly related to superconductivity in x = 0.12 sample.
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