Journal
JETP LETTERS
Volume 94, Issue 4, Pages 333-337Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364011160041
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- Russian Ministry of Education and Science [2009-1.5-508-008-043]
- Russian Foundation for Basic Research [09-02-01224, 11-02-12071]
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The normal state resistivity in multiband superconductors has been analyzed in the framework of Eliashberg theory. The results are compared with measurements of the temperature dependence of normal state resistivity of high-purity Ba0.68K0.32Fe2As2 single crystals with the highest reported transition temperature T-c = 38.5 K. The experimental data demonstrate strong deviations from the Bloch-Gruneisen behavior, namely the tendency to saturation of the resistivity at high temperatures. The observed behavior of the resistivity is explained within the two band scenario when the first band is strongly coupled and relatively clean, while the second band is weakly coupled and is characterized by much stronger impurity scattering. DOI: 10.1134/S0021364011160041
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