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From the following article:

Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+delta

K. M. Lang, V. Madhavan, J. E. Hoffman, E. W. Hudson, H. Eisaki, S. Uchida and J. C. Davis

Nature 415, 412-416(24 January 2002)

doi:10.1038/415412a

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Figure 1

Typical gap maps from underdoped and as-grown Bi-2212 samples, each showing an area of 560 Å times 560 Å.

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Figure 2

Data obtained at high spatial resolution, showing the typical spatial interrelationship of Delta and G(Delta) for underdoped Bi-2212.

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Figure 3

Typical series of dI/dV spectra illustrating how the two distinct types of regions are apparent in the raw data.

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Figure 4

Analysis of the relationship between Ni scattering resonances and local Delta.

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