Normal State Resistivity of Ba1-xKxFe2As2: Evidence for Multiband Strong-Coupling Behavior

被引：22

作者：

Golubov, A. A. ^{[1
,2
]}

Dolgov, O. V. ^{[3
]}

Boris, A. V. ^{[3
]}

Charnukha, A. ^{[3
]}

Sun, D. L. ^{[3
]}

Lin, C. T. ^{[3
]}

Shevchun, A. F. ^{[4
]}

Korobenko, A. V. ^{[4
,5
]}

Trunin, M. R. ^{[4
,5
]}

Zverev, V. N. ^{[4
,5
]}

机构：

[1] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

[2] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[4] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia

[5] Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia

来源：

JETP LETTERS | 2011年 / 94卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

SINGLE-CRYSTALS; ELECTRICAL-RESISTIVITY; TRANSPORT-PROPERTIES; SUPERCONDUCTIVITY; METALS; V3SI;

D O I：

10.1134/S0021364011160041

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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

引用

页码：333 / 337

页数：5

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