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• W2007478240 abstract "Temperature-dependent inter-plane resistivity, $rho _c(T)$, was measured in hole-doped iron-arsenide superconductor (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ over a doping range from parent compound to optimal doping $T_capprox 38~K$, $0leq x leq 0.34$. Measurements were undertaken on high-quality single crystals grown from FeAs flux. The coupled magnetic/structural transition at $T_{SM}$ leads to clear accelerated decrease of $rho_c(T)$ on cooling in samples with $T_c <$26~K ($x <0.25$). This decrease in hole-doped material is in notable contrast to an increase in $rho_c(T)$ in the electron-doped Ba(Fe$_{1-x}$Co$_x$)Fe $_2$As$_2$ and iso-electron substituted BaFe$_2$(As$_{1-x}$P$_x$)$_2$. The $T_{SM}$ decreases very sharply with doping, dropping from $T_s$=71~K to zero on increase of $T_c$ from approximately 25 to 27~K. The $rho_c(T)$ becomes $T$-linear close to optimal doping. The broad crossover maximum in $rho_c(T)$, found in the parent BaFe$_2$As$_2$ at around $T_{max} sim$200~K, shifts to higher temperature $sim$250~K with doping $x$=0.34. The maximum shows clear correlation with the broad crossover feature found in the temperature-dependent in-plane resistivity $rho_a(T)$. The doping evolution of $T_{max}$ in (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ is in notable contrast with both rapid suppression of $T_{max}$ found in Ba(Fe$_{1-x}TM_x$)$_2$As$_2$ ($TM$=Co,Rh,Ni,Pd) and its rapid increase BaFe$_2$(As$_{1-x}$P$_x$)$_2$. This observation suggest that pseudogap features are much stronger in hole-doped than in electron-doped iron-based superconductors, revealing significant electron-hole doping asymmetry similar to the cuprates. This paper replaces: cond-mat:1106.0533." @default.
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• W2007478240 date "2014-04-30" @default.
• W2007478240 modified "2023-10-14" @default.
• W2007478240 title "Interplane resistivity of underdoped single crystals (Ba<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>K<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mrow /><mml:mi>x</mml:mi></mml:msub></mml:math>)Fe<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>As<mml:math xmlns:mml=…" @default.
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• W2007478240 doi "https://doi.org/10.1103/physrevb.89.144514" @default.
• W2007478240 hasPublicationYear "2014" @default.
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