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Iron pnictide superconductors

Electrons on the verge

An optical analysis reveals that the electronic correlations in the 'parent' compounds of the iron pnictide superconductors are sufficiently strong to significantly impede the mobility of the electrons.

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Figure 1: Electronic correlations in the undoped iron pnictides.

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Si, Q. Electrons on the verge. Nature Phys 5, 629–630 (2009). https://doi.org/10.1038/nphys1394

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