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Journal Articles

Electronic inhomogeneity in a Kondo lattice

Bauer, E. D.*; Yang, Y.-F.*; Capan, C.*; Urbano, R. R.*; Miclea, C. F.*; Sakai, Hironori; Ronning, F.*; Graf, M. J.*; Balatsky, A. V.*; Movshovich, R.*; et al.

Proceedings of the National Academy of Sciences of the United States of America, 108(17), p.6857 - 6861, 2011/04

 Times Cited Count:35 Percentile:81.44(Multidisciplinary Sciences)

Here, we report a manifestation of electronic inhomogeneity in a strongly correlated $$f$$-electron system, using CeCoIn$$_5$$ as an example. A thermodynamic analysis of its superconductivity, combined with nuclear quadrupole resonance measurements, shows that nonmagnetic impurities (Y, La, Yb, Th, Hg, and Sn) locally suppress unconventional superconductivity, generating an inhomogeneous electronic "Swiss cheese" due to disrupted periodicity of the Kondo lattice. Our analysis may be generalized to include related systems, suggesting that electronic inhomogeneity should be considered broadly in Kondo lattice materials.

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