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Evidence for a charge Kondo effect in Pb(1-x)Tl(x)Te from measurements of thermoelectric power

By M. Matusiak, E. M. Tunnicliffe, J. R. Cooper, Y. Matsushita and I. R. Fisher


We report measurements of the thermoelectric power (TEP) for a series of Pb(1-x)Tl(x)Te crystals with x = 0.0 to 1.3%. Although the TEP is very large for x = 0.0, using a single band analysis based on older work for dilute magnetic alloys we do find evidence for a Kondo contribution of 11 - 18 uV/K. This analysis suggests that Tk is ~ 50 - 70 K, a factor 10 higher than previously thought.Comment: 4 pages, 3 figure

Topics: Condensed Matter - Strongly Correlated Electrons
Publisher: 'American Physical Society (APS)'
Year: 2009
DOI identifier: 10.1103/PhysRevB.80.220403
OAI identifier:

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