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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2011, Volume 94, Issue 4, Pages 357–361
(Mi jetpl2005)
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This article is cited in 24 scientific papers (total in 24 papers)
CONDENSED MATTER
Normal state resistivity of
Ba$_{1-x}$K$_x$Fe$_2$As$_2$: evidence for multiband strong-coupling behavior
A. A. Golubova, O. V. Dolgovb, A. V. Borisb, A. Charnukhab, D. L. Sunb, C. T. Linb, A. F. Shevchunc, A. V. Korobenkocd, M. R. Trunincd, V. N. Zverevdc a University of Twente
b Max Planck Institute for Solid State Research
c Institute of Solid State Physics, Russian Academy of Sciences
d Moscow Institute of Physics and Technology
Abstract:
We present theoretical analysis of the normal state resistivity in
multiband superconductors in the framework of Eliashberg theory. The results
are compared with measurements of the temperature dependence of normal state
resistivity of high-purity Ba$_{0.68}$K$_{0.32}$Fe$_{2}$As$_{2}$ single
crystals with the highest reported transition temperature $T_c = 38.5$ K. The
experimental data demonstrate strong deviations from the Bloch–Grüneisen
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.
Received: 25.04.2011 Revised: 07.07.2011
Citation:
A. A. Golubov, O. V. Dolgov, A. V. Boris, A. Charnukha, D. L. Sun, C. T. Lin, A. F. Shevchun, A. V. Korobenko, M. R. Trunin, V. N. Zverev, “Normal state resistivity of
Ba$_{1-x}$K$_x$Fe$_2$As$_2$: evidence for multiband strong-coupling behavior”, Pis'ma v Zh. Èksper. Teoret. Fiz., 94:4 (2011), 357–361; JETP Letters, 94:4 (2011), 333–337
Linking options:
https://www.mathnet.ru/eng/jetpl2005 https://www.mathnet.ru/eng/jetpl/v94/i4/p357
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